Updated on 2024/04/18

写真a

 
KATAYAMA Naoyuki
 
Organization
Graduate School of Engineering Applied Physics 2 Associate professor
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Physical Science and Engineering
Title
Associate professor
Contact information
メールアドレス
Profile

2007.4 日本学術振興会特別研究員DC2
2008.4 東京大学物性研究所 大串研究室
日本学術振興会特別研究員PD
2009.4 Virginia大学物理学科 Seunghun Lee group
Research Associate
2011.7 名古屋大学大学院工学研究科・マテリアル理工学専攻
応用物理学分野・構造物性物理学講座 助教 
2015.12 名古屋大学大学院工学研究科・マテリアル理工学専攻
応用物理学分野・構造物性物理学講座 准教授   現在に至る
2018.4 東京工業大学・フロンティア材料研究所
特任准教授 (兼任)  現在に至る
2022.7 あいちシンクロトロン光センタービームライン課
主任研究員 (兼任)  現在に至る
External link

Degree 1

  1. 博士 (科学) ( 2008.3   東京大学 ) 

Research Interests 5

  1. 構造物性

  2. X線回折

  3. 量体化

  4. 物質合成

  5. 磁性

Research Areas 1

  1. Natural Science / Magnetism, superconductivity and strongly correlated systems  / 固体物性, 構造物性, 構造解析, 物質開拓

Current Research Project and SDGs 1

  1. Structural study of local strains that spontaneously appear in the high-temperature phase of quantified systems

Research History 5

  1. 科学技術交流財団   あいちシンクロトロン光センタービームライン課   主任研究員

    2022.7

  2. Tokyo Institute of Technology   Designated associate professor

    2018.4

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    Country:Japan

  3. Nagoya University   School of Engineering

    2016.4 - 2018.3

  4. バージニア大学物理学科研究員

    2009.4 - 2011.6

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    Country:Japan

  5. 物性研究所研究員

    2008.4 - 2009.3

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    Country:Japan

Education 3

  1. The University of Tokyo

    2005.4 - 2008.3

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    Country: Japan

  2. The University of Tokyo

    2003.4 - 2005.3

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    Country: Japan

  3. The University of Tokyo   Faculty of Engineering

    1999.4 - 2003.3

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    Country: Japan

Professional Memberships 2

  1. 日本物理学会

  2. アメリカ物理学会

Committee Memberships 3

  1. 日本物理学会   領域8運営委員代表  

    2021.4 - 2022.3   

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    Committee type:Academic society

  2. 日本物理学会第76期名古屋支部役員   会誌編集支部委員  

    2020.4   

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    Committee type:Academic society

  3. 日本物理学会実行委員   委員  

    2019.4 - 2020.3   

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    Committee type:Academic society

Awards 17

  1. 日本物理学会第26回論文賞 2021

    2021.3   日本物理学会  

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  2. Graduate Student Award

    2024.3   MRM2023 IUMRS-ICA2023   Zigzag chain order of LiVSe2 developing away from the vanadium trimer phase transition boundary of LiVX2 (X = O, S, Se)

    K. Kojima, N. Katayama, K. Sugimoto, N. Hirao, Y. Ohta, H. Sawa

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    Award type:Award from international society, conference, symposium, etc. 

  3. 優秀ポスター賞

    2023.8   第68回 物性若手夏の学校   層状LiVO2における三量体フラストレーションの制御

    小島慶太, 片山尚幸, 澤博

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    Award type:Award from Japanese society, conference, symposium, etc. 

  4. JPSJ Papers of Editors' Choice

    2023.5   Temporal Evolution and Fluence Dependence of Band Structure in Photoexcited Ta2Ni0.9Co0.1Se5 Probed by Time- and Angle-Resolved Photoemission Spectroscopy

    Yu Takahashi, Takeshi Suzuki, Masaki Hattori, Mario Okawa, Hidenori Takagi, Naoyuki Katayama, Hiroshi Sawa, Minoru Nohara, Yigui Zhong, Kecheng Liu, Teruto Kanai, Jiro Itatani, Shik Shin, Kozo Okazaki, and Takashi Mizokawa

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    Award type:Honored in official journal of a scientific society, scientific journal 

  5. 2023年春季大会学生優秀発表賞

    2023.4   日本物理学会   CuRh2Se4の高圧下における超伝導相を含む低対称化相の発見

    江見方敏,小島慶太,塩見学,片山尚幸,松林和幸,門林宏和,平尾直久,河口沙織,澤博

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    Award type:Award from Japanese society, conference, symposium, etc. 

  6. ポスター賞

    2023.1   11th NUSRシンポジウム   RuPの高温相であらわれる量体化の前駆的格子ひずみの構造研究

    横田陽之, 小島慶太, 片山尚幸, 平井大悟郎, 澤博

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    Award type:Award from Japanese society, conference, symposium, etc. 

  7. 第77回年次大会 (2022年) 学生優秀発表賞

    2022.9   日本物理学会   層状LiVO2におけるLiイオンサイトの乱れに起因する三量体ガラス状態の局所的結晶化

    小島慶太,松田悠大,塩見学,片山尚幸,澤博

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    Award type:Award from Japanese society, conference, symposium, etc. 

  8. 第10回名古屋大学シンクロトロン光研究センターシンポジウム ベストポスター発表賞

    2022.1   名古屋大学シンクロトロン光研究センター   動的短距離秩序を有するLiVS2の放射光X線構造研究

    小島慶太,片山尚幸,田渕雅夫,澤博

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    Award type:Award from Japanese society, conference, symposium, etc. 

  9. 第5回 固体化学フォーラム 『優秀賞』

    2021.6   固体化学フォーラム   混合原子価スピネル型酸化物 LiRh2O4 における電荷秩序

    塩見学、小島慶太、前田秦、片山尚幸、岡本佳比古、澤博

  10. 第5回 固体化学フォーラム 『優秀賞』

    2021.6   固体化学フォーラム   層状LiVX2(X = S, Se)の三量体相近傍で現れるVジグザグ鎖の発達

    小島慶太、片山尚幸、磯田龍矢、塩見学、澤博

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    Award type:Award from Japanese society, conference, symposium, etc. 

  11. JPSJ Papers of Editors' Choice

    2021.6   日本物理学会  

  12. Physical Review B editors' suggestion

    2021   American Physical Society  

  13. 第4回 固体化学フォーラム 『優秀賞』

    2019.6   固体化学フォーラム   層状LiVS2高温常磁性相で現れるジグザグ鎖分子の液体状態

    小島慶太、片山尚幸、田村慎也、服部颯介、齋藤晃、澤博

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    Award type:Award from Japanese society, conference, symposium, etc. 

  14. 日本物理学会第24回論文賞 2019

    2019   日本物理学会  

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

  15. JPSJ Most Cited Articles in 2014

    2015   Superconductivity in Ca1-xLaxFeAs2: A Novel 112-Type Iron Pnictide with Arsenic Zigzag Bonds

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

  16. JPSJ Most Cited Articles in 2009

    2010   Intrinsic Properties of AFe2As2 (A = Ba, Sr) Single Crystal under Highly Hydrostatic Pressure Conditions

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    Country:Japan

  17. JPSJ Most Cited Articles in 2008

    2009   日本物理学会  

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

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Papers 103

  1. Short-range order and increased transition temperature in LiVO2 with weakened trimer frustration Reviewed

    K Kojima, N Katayama, Y Matsuda, M Shiomi, R Ishii, H Sawa

    Physical Review B   Vol. 107 ( 2 ) page: L020101   2023.1

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    Authorship:Corresponding author   Language:English  

  2. Metastable ordered states induced by low-temperature annealing of δ−Ag2/3V2O5 Reviewed International coauthorship

    T. Kubo, K. Kojima, N. Katayama, T. Runčevski, R. E. Dinnebier, A. S. Gibbs, M. Isobe, and H. Sawa

    Physical Review B   Vol. 109   page: 104115   2024.3

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    Authorship:Corresponding author   Language:English  

    DOI: https://doi.org/10.1103/PhysRevB.109.104115

  3. Electroactive actuator composites using volume change induced by insulator-to-metal transition in VO<sub>2</sub> Reviewed

    Takenaka, K; Mizuno, Y; Shibutani, J; Kishida, K; Takada, K; Yagi, K; Yokoyama, Y; Katayama, N; Okamoto, Y; Hirai, D; Hatanó, T; Fujita, A

    APPLIED PHYSICS LETTERS   Vol. 123 ( 23 )   2023.12

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    Language:English  

    DOI: 10.1063/5.0175670

    Web of Science

  4. Fermi surface and light quasi particles in hourglass nodal chain metal ß-ReO<sub>2</sub>

    Hirai, D; Anbai, T; Konoike, T; Uji, S; Hattori, Y; Terashima, T; Ishikawa, H; Kindo, K; Katayama, N; Oguchi, T; Hiroi, Z

    JOURNAL OF PHYSICS-CONDENSED MATTER   Vol. 35 ( 40 )   2023.10

  5. Zigzag chain order of LiVSe<sub>2</sub> developing away from the vanadium trimer phase transition boundary Reviewed

    Kojima, K; Katayama, N; Sugimoto, K; Hirao, N; Ohta, Y; Sawa, H

    PHYSICAL REVIEW B   Vol. 108 ( 9 )   2023.9

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    Authorship:Corresponding author   Language:English  

    DOI: 10.1103/PhysRevB.108.094107

    Web of Science

  6. Structural and Electronic Properties of a Triangular Lattice Magnet NaPrTe<sub>2</sub> Compared with NaNdTe<sub>2</sub> and NaTbTe<sub>2</sub> Reviewed

    Eto, K; Okamoto, Y; Katayama, N; Ishikawa, H; Kindo, K; Takenaka, K

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   Vol. 92 ( 9 )   2023.9

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    Language:English  

    DOI: 10.7566/JPSJ.92.094707

    Web of Science

  7. Superconductivity in High-Entropy Antimonide M<sub>1-<i>x</i> </sub>Pt<sub> <i>x</i> </sub>Sb (M = Equimolar Ru, Rh, Pd, and Ir) Reviewed

    Hirai, D; Uematsu, N; Saitoh, K; Katayama, N; Takenaka, K

    INORGANIC CHEMISTRY   Vol. 62 ( 35 ) page: 14207 - 14215   2023.8

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  8. Observation of local atomic displacements intrinsic to the double zigzag chain structure of 1T-MTe2 (M = V, Nb, Ta) Reviewed

    Katayama, N; Matsuda, Y; Kojima, K; Hara, T; Kitou, S; Mitsuishi, N; Takahashi, H; Ishiwata, S; Ishizaka, K; Sawa, H

    PHYSICAL REVIEW B   Vol. 107 ( 24 )   2023.6

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    Authorship:Lead author, Corresponding author   Language:English  

    DOI: 10.1103/PhysRevB.107.245113

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  9. Temporal Evolution and Fluence Dependence of Band Structure in Photoexcited Ta2Ni0.9Co0.1Se5 Probed by Time- and Angle-Resolved Photoemission Spectroscopy Reviewed

    Takahashi, Y; Suzuki, T; Hattori, M; Okawa, M; Takagi, H; Katayama, N; Sawa, H; Nohara, M; Zhong, YG; Liu, KC; Kanai, T; Itatani, J; Shin, S; Okazaki, K; Mizokawa, T

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   Vol. 92 ( 6 )   2023.6

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    Language:English  

    DOI: 10.7566/JPSJ.92.064706

    Web of Science

  10. Quasi One-Dimensional Band Structure of Photoinduced Semimetal Phase of Ta2Ni1-xCoxSe5 (x=0.0 and 0.1) Reviewed

    Mitsuoka, T; Takahashi, Y; Suzuki, T; Okawa, M; Takagi, H; Katayama, N; Sawa, H; Nohara, M; Watanabe, M; Xu, JD; Ren, QH; Fujisawa, M; Kanai, T; Itatani, J; Okazaki, K; Shin, S; Mizokawa, T

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   Vol. 92 ( 2 )   2023.2

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    DOI: 10.7566/JPSJ.92.023703

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  11. Quasi One-Dimensional Band Structure of Photoinduced Semimetal Phase of Ta2Ni1−xCoxSe5 (x = 0.0 and 0.1) Reviewed

    Journal of the Physical Society of Japan   Vol. 92 ( 2 ) page: 023703   2023.2

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  12. Pressure suppression of the excitonic insulator state in Ta2NiSe5 observed by optical conductivity

    Okamura, H; Mizokawa, T; Miki, K; Matsui, Y; Noguchi, N; Katayama, N; Sawa, H; Nohara, M; Lu, Y; Takagi, H; Ikemoto, Y; Moriwaki, T

    PHYSICAL REVIEW B   Vol. 107 ( 4 )   2023.1

  13. Systematic Study on the Role of the Third Zn-Site Element in Zn21xMgxP2O7 Showing Giant Negative Thermal Expansion

    Kasugai, R; Kadowaki, Y; Yokoyama, Y; Katayama, N; Okamoto, Y; Takenaka, K

    MATERIALS TRANSACTIONS   Vol. 64 ( 3 ) page: 638 - 642   2023

  14. Linear Trimer Molecule Formation by Three-Center-Four-Electron Bonding in a Crystalline Solid RuP Reviewed

    Hirai Daigorou, Kojima Keita, Katayama Naoyuki, Kawamura Mitsuaki, Nishio-Hamane Daisuke, Hiroi Zenji

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   Vol. 144 ( 39 ) page: 17857 - 17864   2022.10

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  15. Electrical-field-induced insulator-to-metal transition in samarium monosulfides Reviewed

    Kishida K., Shibutani J., Hatano T., Yokoyama Y., Katayama N., Okamoto Y., Nakamura Y., Kishida H., Suzuki H. S., Takehana K., Imanaka Y., Takenaka K.

    APPLIED PHYSICS LETTERS   Vol. 121 ( 12 )   2022.9

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    DOI: 10.1063/5.0108716

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  16. 負熱膨張性微粒子の開発 Invited Reviewed

    竹中康司, 岡本佳比古, 横山泰範, 片山尚幸, 門脇義史, 江藤昂樹, 渋谷隼矢, 加納雅人, 春日井涼太, 山田展也

    粉体および粉末冶金   Vol. 69 ( 8 ) page: 359 - 355   2022.8

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  17. Do electron distributions with orbital degree of freedom exhibit anisotropy? Reviewed

    Manjo, T; Kitou, S; Katayama, N; Nakamura, S; Katsufuji, T; Nii, Y; Arima, TH; Nasu, J; Hasegawa, T; Sugimoto, K; Ishikawa, D; Baron, AQR; Sawa, H

    MATERIALS ADVANCES   Vol. 3 ( 7 ) page: 3192 - 3198   2022.4

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    DOI: 10.1039/d1ma01113h

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  18. Structural phase transition and negative thermal expansion in Cu 1.8 Zn0.2V2-x P x O7 solid solutions Reviewed

    APPLIED PHYSICS EXPRESS   Vol. 15 ( 2 )   2022.2

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  19. Charge-ordered state satisfying the Anderson condition in LiRh<sub>2</sub>O<sub>4</sub> arising from local dimer order Reviewed

    Shiomi, M; Kojima, K; Katayama, N; Maeda, S; Schneeloch, JA; Yamamoto, S; Sugimoto, K; Ohta, Y; Louca, D; Okamoto, Y; Sawa, H

    PHYSICAL REVIEW B   Vol. 105 ( 4 )   2022.1

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  20. Structural phase transition and giant negative thermal expansion in pyrophosphate Zn<sub>2-</sub><sub><i>x</i></sub>Mg<sub><i>x</i></sub>P<sub>2</sub>O<sub>7</sub>

    Kadowaki, Y; Kasugai, R; Yokoyama, Y; Katayama, N; Okamoto, Y; Takenaka, K

    APPLIED PHYSICS LETTERS   Vol. 119 ( 20 )   2021.11

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    DOI: 10.1063/5.0073761

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  21. Giant negative thermal expansion of polycrystalline Ti<sub>2</sub>O<sub>3</sub> induced by microstructural effects

    Kadowaki, Y; Kasugai, R; Yokoyama, Y; Katayama, N; Okamoto, Y; Takenaka, K

    APPLIED PHYSICS LETTERS   Vol. 119 ( 17 )   2021.10

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    DOI: 10.1063/5.0068637

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  22. Hybridization-Gap Formation and Superconductivity in the Pressure-Induced Semimetallic Phase of the Excitonic Insulator Ta<sub>2</sub>NiSe<sub>5</sub>

    Matsubayashi, K; Okamura, H; Mizokawa, T; Katayama, N; Nakano, A; Sawa, H; Kaneko, T; Toriyama, T; Konishi, T; Ohta, Y; Arima, H; Yamanaka, R; Hisada, A; Okada, T; Ikemoto, Y; Moriwaki, T; Munakata, K; Nakao, A; Nohara, M; Lu, YF; Takagi, H; Uwatoko, Y

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   Vol. 90 ( 7 )   2021.7

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    DOI: 10.7566/JPSJ.90.074706

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  23. Detecting electron-phonon coupling during photoinduced phase transition Reviewed

    Takeshi Suzuki, Yasushi Shinohara, Yangfan Lu, Mari Watanabe, Jiadi Xu, Kenichi L. Ishikawa, Hide Takagi, Minoru Nohara, Naoyuki Katayama, Hiroshi Sawa, Masami Fujisawa, Teruto Kanai, Jiro Itatani, Takashi Mizokawa, Shik Shin, and Kozo Okazaki

    Physical Review B   Vol. 103   page: L121105   2021.3

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  24. Detecting electron-phonon coupling during photoinduced phase transition

    Suzuki, T; Shinohara, Y; Lu, YF; Watanabe, M; Xu, JD; Ishikawa, KL; Takagi, H; Nohara, M; Katayama, N; Sawa, H; Fujisawa, M; Kanai, T; Itatani, J; Mizokawa, T; Shin, S; Okazaki, K

    PHYSICAL REVIEW B   Vol. 103 ( 12 )   2021.3

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  25. Slow dynamics of disordered zigzag chain molecules in layered LiVS<sub>2</sub> under electron irradiation Reviewed

    Katayama, N; Kojima, K; Yamaguchi, T; Hattori, S; Tamura, S; Ohara, K; Kobayashi, S; Sugimoto, K; Ohta, Y; Saitoh, K; Sawa, H

    NPJ QUANTUM MATERIALS   Vol. 6 ( 1 )   2021.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41535-021-00313-w

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  26. Ambient-pressure Dirac electron system in the quasi-two-dimensional molecular conductor α-(BETS)2I3 Reviewed

    Shunsuke Kitou, Takao Tsumuraya, Hikaru Sawahata, Fumiyuki Ishii, Ko-ichi Hiraki, Toshikazu Nakamura, Naoyuki Katayama, and Hiroshi Sawa

    Physical Review B   Vol. 103   page: 35135   2021.1

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  27. Ambient-pressure Dirac electron system in the quasi-two-dimensional molecular conductor α-(BETS)<sub>2</sub>I<sub>3</sub>

    Kitou, S; Tsumuraya, T; Sawahata, H; Ishii, F; Hiraki, K; Nakamura, T; Katayama, N; Sawa, H

    PHYSICAL REVIEW B   Vol. 103 ( 3 )   2021.1

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  28. Photoinduced Phase Transition from Excitonic Insulator to Semimetal-like State in Ta<sub>2</sub>N<sub>1-<i>x</i></sub>Co<i><sub>x</sub></i>Se<sub>5</sub> (<i>x</i>=0.10) Reviewed

    Mitsuoka, T; Suzuki, T; Takagi, H; Katayama, N; Sawa, H; Nohara, M; Watanabe, M; Xu, JD; Ren, QH; Fujisawa, M; Kanai, T; Itatani, J; Shin, S; Okazaki, K; Mizokawa, T

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   Vol. 89 ( 12 )   2020.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.7566/JPSJ.89.124703

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  29. Annealing effects on negative thermal expansion properties of ball-milled beta-Cu1.8Zn0.2V2O7 fine particles Reviewed

    Warne-Lang V, Sato M., Ozeki M., Kadowaki Y., Yokoyama Y., Katayama N., Okamoto Y., Takenaka K.

    CERAMICS INTERNATIONAL   Vol. 46 ( 17 ) page: 27655 - 27659   2020.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.ceramint.2020.07.261

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  30. Direct Observation of Molecular Orbitals Using Synchrotron X-ray Diffraction Invited Reviewed

    Shunsuke Kitou, Yuto Hosogi, Ryo Kitaura, Toshio Naito, Toshikazu Nakamura, and Hiroshi Sawa

    Crystals   Vol. 10   page: 998   2020.11

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  31. Collapse of the simple localized 3<i>d</i><SUP>1</SUP> orbital picture in Mott insulator Reviewed

    Kitou, S; Manjo, T; Katayama, N; Shishidou, T; Arima, T; Taguchi, Y; Tokura, Y; Nakamura, T; Yokoyama, T; Sugimoto, K; Sawa, H

    PHYSICAL REVIEW RESEARCH   Vol. 2 ( 3 )   2020.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevResearch.2.033503

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  32. High-mobility carriers induced by chemical doping in the candidate nodal-line semimetal CaAgP Reviewed

    Okamoto Yoshihiko, Saigusa Kazushige, Wada Taichi, Yamakawa Youichi, Yamakage Ai, Sasagawa Takao, Katayama Naoyuki, Takatsu Hiroshi, Kageyama Hiroshi, Takenaka Koshi

    PHYSICAL REVIEW B   Vol. 102 ( 11 )   2020.9

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevB.102.115101

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  33. Mapping the unoccupied state dispersions in Ta2NiSe5 with resonant inelastic x-ray scattering Reviewed

    Monney C., Herzog M., Pulkkinen A., Huang Y., Pelliciari J., Olalde-Velasco P., Katayama N., Nohara M., Takagi H., Schmitt T., Mizokawa T.

    PHYSICAL REVIEW B   Vol. 102 ( 8 )   2020.8

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevB.102.085148

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  34. Robust atomic orbital in the cluster magnet LiMoO2 Reviewed

    Katayama N., Takeda H., Yamaguchi T., Yamada Y., Iida K., Takigawa M., Ohta Y., Sawa H.

    PHYSICAL REVIEW B   Vol. 102 ( 8 )   2020.8

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevB.102.081106

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  35. Annealing effect on local structure and negative thermal expansion of antiperovskite manganese nitride fine particles Reviewed

    Ozeki Masaki, Warne-Lang Victoria, Tsukasaki Hirofumi, Sakai Yuki, Katayama Naoyuki, Okamoto Yoshihiko, Azuma Masaki, Mori Shigeo, Takenaka Koshi

    APPLIED PHYSICS EXPRESS   Vol. 13 ( 7 ) page: .   2020.7

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.35848/1882-0786/ab92f0

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  36. Sol-gel synthesis of doped Cu2V2O7 fine particles showing giant negative thermal expansion Reviewed

    Sato M., Warne-Lang V, Kadowaki Y., Katayama N., Okamoto Y., Takenaka K.

    AIP ADVANCES   Vol. 10 ( 7 )   2020.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/5.0010631

    Web of Science

  37. Regular-triangle trimer and charge order preserving the Anderson condition in the pyrochlore structure of CsW2O6 Reviewed

    Okamoto Yoshihiko, Amano Haruki, Katayama Naoyuki, Sawa Hiroshi, Niki Kenta, Mitoka Rikuto, Harima Hisatomo, Hasegawa Takumi, Ogita Norio, Tanaka Yu, Takigawa Masashi, Yokoyama Yasunori, Takehana Kanji, Imanaka Yasutaka, Nakamura Yuto, Kishida Hideo, Takenaka Koshi

    NATURE COMMUNICATIONS   Vol. 11 ( 1 )   2020.6

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    DOI: 10.1038/s41467-020-16873-7

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  38. Spray-dry synthesis of beta-Cu1.8Zn0.2V2O7 ceramic fine particles showing giant negative thermal expansion Reviewed

    Takenaka Koshi, Sato Miku, Mitamura Masaya, Yokoyama Yasunori, Katayama Naoyuki, Okamoto Yoshihiko

    JOURNAL OF THE AMERICAN CERAMIC SOCIETY   Vol. 103 ( 4 ) page: 2757 - 2763   2020.4

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    DOI: 10.1111/jace.16931

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  39. Intercalated Cu+ ion dynamics in the two-dimensional layered compound Cu0.33TiSe2 Reviewed

    Kitou Shunsuke, Hasegawa Takumi, Nakano Akitoshi, Katayama Naoyuki, Tsutsui Satoshi, Sawa Hiroshi

    PHYSICAL REVIEW B   Vol. 101 ( 9 )   2020.3

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    DOI: 10.1103/PhysRevB.101.094108

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  40. Negative Thermal Expansion of beta-Cu1.8Zn0.2V2O7 Ceramic Fine Particles Synthesized by a Spray-Drying Method

    Takenaka Koshi, Sato Miku, Nishikawa Tomohiro, Omura Takuya, Yamada Nobuya, Yokoyama Yasunori, Katayama Naoyuki, Okamoto Yoshihiko

    JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS   Vol. 84 ( 5 ) page: 161 - 166   2020

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    DOI: 10.2320/jinstmet.J2019053

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  41. Resistive anisotropy of candidate excitonic insulator Ta<sub>2</sub>NiSe<sub>5</sub> under pressure

    Arima H., Naito Y., Kudo K., Katayama N., Sawa H., Nohara M., Lu Y. F., Kitagawa K., Takagi H., Uwatoko Y., Matsubayashi K.

    27TH AIRAPT INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY   Vol. 1609   2020

  42. Valence-bond insulator in proximity to excitonic instability

    Chiba Y., Mitsuoka T., Saini N. L., Horiba K., Kobayashi M., Ono K., Kumigashira H., Katayama N., Sawa H., Nohara M., Lu Y. F., Takagi H., Mizokawa T.

    PHYSICAL REVIEW B   Vol. 100 ( 24 )   2019.12

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    DOI: 10.1103/PhysRevB.100.245129

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  43. Vanadium trimers randomly aligned along the c-axis direction in layered LiVO2

    Kojima K., Katayama N., Tamura S., Shiomi M., Sawa H.

    PHYSICAL REVIEW B   Vol. 100 ( 23 )   2019.12

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    DOI: 10.1103/PhysRevB.100.235120

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  44. Exciton Transport in the Electron-Hole System Ta2NiSe5

    Nakano Akitoshi, Nagai Takayuki, Katayama Naoyuki, Sawa Hiroshi, Taniguchi Hiroki, Terasaki Ichiro

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   Vol. 88 ( 11 )   2019.11

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    DOI: 10.7566/JPSJ.88.113706

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  45. Linear Trimer Formation with Antiferromagnetic Ordering in 1T-CrSe2 Originating from Peierls-like Instabilities and Interlayer Se-Se Interactions

    Kobayashi Shintaro, Katayama Naoyuki, Manjo Taishun, Ueda Hiroaki, Michioka Chishiro, Sugiyama Jun, Sassa Yasmine, Forslund Ola Kenji, Mansson Martin, Yoshimura Kazuyoshi, Sawa Hiroshi

    INORGANIC CHEMISTRY   Vol. 58 ( 21 ) page: 14304 - 14315   2019.11

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    DOI: 10.1021/acs.inorgchem.9b00186

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  46. Two magnetization plateaus in the kagome fluoride Cs2LiTi3F12

    Shirakami Ryu, Ueda Hiroaki, Jeschke Harald O., Nakano Hiroki, Kobayashi Shintaro, Matsuo Akira, Sakai Toru, Katayama Naoyuki, Sawa Hiroshi, Kindo Koichi, Michioka Chishiro, Yoshimura Kazuyoshi

    PHYSICAL REVIEW B   Vol. 100 ( 17 )   2019.11

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    DOI: 10.1103/PhysRevB.100.174401

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  47. Valence fluctuations and giant isotropic negative thermal expansion in Sm1-xRxS (R= Y, La, Ce, Pr, Nd)

    Asai D., Mizuno Y., Hasegawa H., Yokoyama Y., Okamoto Y., Katayama N., Suzuki H. S., Imanaka Y., Takenaka K.

    APPLIED PHYSICS LETTERS   Vol. 114 ( 14 )   2019.4

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    DOI: 10.1063/1.5090546

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  48. Effect of Cu intercalation and pressure on excitonic interaction in 1T-TiSe2

    Kitou S., Nakano A., Kobayashi S., Sugawara K., Katayama N., Maejima N., Machida A., Watanuki T., Ichimura K., Tanda S., Nakamura T., Sawa H.

    PHYSICAL REVIEW B   Vol. 99 ( 10 )   2019.3

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    DOI: 10.1103/PhysRevB.99.104109

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  49. Quantum magnetisms in uniform triangular lattices Li(2)AMo(3)O(8) (A = In, Sc)

    Iida Kazuki, Yoshida Hiroyuki, Okabe Hirotaka, Katayama Naoyuki, Ishii Yuto, Koda Akihiro, Inamura Yasuhiro, Murai Naoki, Ishikado Motoyuki, Kadono Ryosuke, Kajimoto Ryoichi

    SCIENTIFIC REPORTS   Vol. 9   2019.2

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    DOI: 10.1038/s41598-018-36123-7

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  50. Honeycomb lattice type charge density wave associated with interlayer Cu ions ordering in 1T-CuxTiSe2

    Kitou Shunsuke, Kobayashi Shintaro, Kaneko Tatsuya, Katayama Naoyuki, Yunoki Seiji, Nakamura Toshikazu, Sawa Hiroshi

    PHYSICAL REVIEW B   Vol. 99 ( 8 )   2019.2

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    DOI: 10.1103/PhysRevB.99.081111

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  51. Giant isotropic negative thermal expansion in Y-doped samarium monosulfides by intra-atomic charge transfer

    Takenaka Koshi, Asai Daigo, Kaizu Ryoichi, Mizuno Yosuke, Yokoyama Yasunori, Okamoto Yoshihiko, Katayama Naoyuki, Suzuki Hiroyuki S., Imanaka Yasutaka

    SCIENTIFIC REPORTS   Vol. 9   2019.1

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    DOI: 10.1038/s41598-018-36568-w

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  52. Microstructural effects on negative thermal expansion extending over a wide temperature range in beta-Cu1.8Zn0.2V2O7

    Katayama N., Otsuka A. K., Mitamura M., Yokoyama Y., Okamoto Y., Takenaka K.

    APPLIED PHYSICS LETTERS   Vol. 113 ( 18 )   2018.10

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    DOI: 10.1063/1.5055304

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  53. Photo-induced semimetallic states realised in electron-hole coupled insulators

    Okazaki Kozo, Ogawa Yu, Suzuki Takeshi, Yamamoto Takashi, Someya Takashi, Michimae Shoya, Watanabe Mari, Lu Yangfan, Nohara Minoru, Takagi Hidenori, Katayama Naoyuki, Sawa Hiroshi, Fujisawa Masami, Kanai Teruto, Ishii Nobuhisa, Itatani Jiro, Mizokawa Takashi, Shin Shik

    NATURE COMMUNICATIONS   Vol. 9   2018.10

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    DOI: 10.1038/s41467-018-06801-1

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  54. Extended operating temperature window of giant negative thermal expansion in Sn-doped Ca2RuO4

    Takenaka K., Inoue N., Mizuno Y., Okamoto Y., Katayama N., Sakai Y., Nishikubo T., Azuma M.

    APPLIED PHYSICS LETTERS   Vol. 113 ( 7 )   2018.8

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    DOI: 10.1063/1.5046463

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  55. Large entropy change derived from orbitally assisted three-centered two-electron sigma bond formation in metallic Li0.33VS2

    Katayama N., Tamura S., Yamaguchi T., Sugimoto K., Iida K., Matsukawa T., Hoshikawa A., Ishigaki T., Kobayashi S., Ohta Y., Sawa H.

    PHYSICAL REVIEW B   Vol. 98 ( 8 )   2018.8

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    DOI: 10.1103/PhysRevB.98.081104

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  56. Antiferroelectric distortion with anomalous phonon softening in the excitonic insulator Ta2NiSe5 Reviewed

    Akitoshi Nakano, Takumi Hasegawa, Shinya Tamura, Naoyuki Katayama, Satoshi Tsutsui, and Hiroshi Sawa

      Vol. 98   page: 045139   2018.7

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  57. Antiferroelectric distortion with anomalous phonon softening in the excitonic insulator Ta<sub>2</sub>NiSe<sub>5</sub>

    Nakano, A; Hasegawa, T; Tamura, S; Katayama, N; Tsutsui, S; Sawa, H

    PHYSICAL REVIEW B   Vol. 98 ( 4 )   2018.7

  58. In-plane spin canting and 1/3-magnetization-plateaulike behavior in S=3/2 Cr3+ kagome lattice antiferromagnets Cs2KCr3F12 and Cs2NaCr3F12

    Goto Masato, Ueda Hiroaki, Michioka Chishiro, Matsuo Akira, Kindo Koichi, Sugawara Kento, Kobayashi Shintaro, Katayama Naoyuki, Sawa Hiroshi, Yoshimura Kazuyoshi

    PHYSICAL REVIEW B   Vol. 97 ( 22 )   2018.6

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    DOI: 10.1103/PhysRevB.97.224421

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  59. Inhibition of the photoinduced structural phase transition in the excitonic insulator Ta2NiSe5

    Mor Selene, Herzog Marc, Noack Johannes, Katayama Naoyuki, Nohara Minoru, Takagi Hide, Trunschke Annette, Mizokawa Takashi, Monney Claude, Staehler Julia

    PHYSICAL REVIEW B   Vol. 97 ( 11 )   2018.3

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    DOI: 10.1103/PhysRevB.97.115154

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  60. Magnetic and Structural Properties of A-Site Ordered Chromium Spinel Sulfides: Alternating Antiferromagnetic and Ferromagnetic Interactions in the Breathing Pyrochlore Lattice

    Okamoto Yoshihiko, Mori Masaki, Katayama Naoyuki, Miyake Atsushi, Tokunaga Masashi, Matsuo Akira, Kindo Koichi, Takenaka Koshi

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   Vol. 87 ( 3 )   2018.3

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    DOI: 10.7566/JPSJ.87.034709

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  61. Pressure-induced coherent sliding-layer transition in the excitonic insulator Ta2NiSe5

    Nakano Akitoshi, Sugawara Kento, Tamura Shinya, Katayama Naoyuki, Matsubayashi Kazuyuki, Okada Taku, Uwatoko Yoshiya, Munakata Kouji, Nakao Akiko, Sagayama Hajime, Kumai Reiji, Sugimoto Kunihisa, Maejima Naoyuki, Machida Akihiko, Watanuki Tetsu, Sawa Hiroshi

    IUCRJ   Vol. 5   page: 158 - 165   2018.3

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    DOI: 10.1107/S2052252517018334

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  62. Direct Visualization of Orbital Flipping in Volborthite by Charge Density Analysis Using Detwinned Data

    Sugawara Kento, Sugimoto Kunihisa, Fujii Tatsuya, Higuchi Takafumi, Katayama Naoyuki, Okamoto Yoshihiko, Sawa Hiroshi

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   Vol. 87 ( 2 )   2018.2

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    DOI: 10.7566/JPSJ.87.024601

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  63. Photo-induced semimetallic states realised in electron-hole coupled insulators Reviewed

    Kozo Okazaki, Yu Ogawa, Takeshi Suzuki, Takashi Yamamoto, Takashi Someya, Shoya Michimae, Mari Watanabe, Yangfan Lu, Minoru Nohara, Hidenori Takagi, Naoyuki Katayama, Hiroshi Sawa, Masami Fujisawa, Teruto Kanai, Nobuhisa Ishii, Jiro Itatani, Takashi Mizokawa, and Shik Shin

    Nature Communications     page: accepted   2018

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  64. Investigation of Honeycomb Lattice Consisting of Cu-2(pymca)(3) Moieties Using Synchrotron Radiation X-ray Structure Analysis

    Sugawara Kento, Sugimoto Kunihisa, Katayama Naoyuki, Hagiwara Masayuki, Honda Zentaro, Sawa Hiroshi

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   Vol. 86 ( 12 )   2017.12

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    DOI: 10.7566/JPSJ.86.123302

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  65. Giant negative thermal expansion in Fe-doped layered ruthenate ceramics

    Takenaka Koshi, Shinoda Tsubasa, Inoue Naruhiro, Okamoto Yoshihiko, Katayama Naoyuki, Sakai Yuki, Nishikubo Takumi, Azuma Masaki

    APPLIED PHYSICS EXPRESS   Vol. 10 ( 11 )   2017.11

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    DOI: 10.7567/APEX.10.115501

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  66. Scaling of Memories and Crossover in Glassy Magnets

    Samarakoon A. M., Takahashi M., Zhang D., Yang J., Katayama N., Sinclair R., Zhou H. D., Diallo S. O., Ehlers G., Tennant D. A., Wakimoto S., Yamada K., Chern G-W., Sato T. J., Lee S. -H.

    SCIENTIFIC REPORTS   Vol. 7   2017.9

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    DOI: 10.1038/s41598-017-12187-9

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  67. Ultrafast Electronic Band Gap Control in an Excitonic Insulator

    Mor Selene, Herzog Marc, Golez Denis, Werner Philipp, Eckstein Martin, Katayama Naoyuki, Nohara Minoru, Takagi Hide, Mizokawa Takashi, Monney Claude, Staehler Julia

    PHYSICAL REVIEW LETTERS   Vol. 119 ( 8 )   2017.8

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    DOI: 10.1103/PhysRevLett.119.086401

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  68. Successive Dimensional Transition in (TMTTF)(2)PF6 Revealed by Synchrotron X-ray Diffraction

    Kitou Shunsuke, Fujii Tatsuya, Kawamoto Tadashi, Katayama Naoyuki, Maki Sachiko, Nishibori Eiji, Sugimoto Kunihisa, Takata Masaki, Nakamura Toshikazu, Sawa Hiroshi

    PHYSICAL REVIEW LETTERS   Vol. 119 ( 6 )   2017.8

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    DOI: 10.1103/PhysRevLett.119.065701

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  69. Ising-like anisotropy stabilized (1)/(3) and (2)/(3) magnetization plateaus in the V3+ kagome lattice antiferromagnets Cs2KV3F12, Cs2NaV3F12, and Rb2NaV3F12

    Goto Masato, Ueda Hiroaki, Michioka Chishiro, Matsuo Akira, Kindo Koichi, Sugawara Kento, Kobayashi Shintaro, Katayama Naoyuki, Sawa Hiroshi, Yoshimura Kazuyoshi

    PHYSICAL REVIEW B   Vol. 95 ( 13 )   2017.4

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    DOI: 10.1103/PhysRevB.95.134436

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  70. Various Arsenic Network Structures in 112-Type Ca1-xLaxFe1-yPdyAs2 Revealed by Synchrotron X-ray Diffraction Experiments

    Tamura Shinya, Katayama Naoyuki*, Yamada Yuto, Sugiyama Yuki, Sugawara Kento, Sawa Hiroshi

    INORGANIC CHEMISTRY   Vol. 56 ( 5 ) page: 3030 - 3035   2017.3

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    DOI: 10.1021/acs.inorgchem.6b03115

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  71. Colossal negative thermal expansion in reduced layered ruthenate Reviewed

    K. Takenaka, Y. Okamoto, T. Shinoda, N. Katayama and Y. Sakai

    Nature Communications   Vol. 8   page: 14102   2017.1

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  72. Colossal negative thermal expansion in reduced layered ruthenate

    Takenaka Koshi, Okamoto Yoshihiko, Shinoda Tsubasa, Katayama Naoyuki, Sakai Yuki

    NATURE COMMUNICATIONS   Vol. 8   2017.1

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    DOI: 10.1038/ncomms14102

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  73. 1.Iron arsenides with three-dimensional FeAs layer networks: Can(n+1)/2(Fe1-xPtx)(2+3n)Ptn(n+1)/2As(n+1)(n+2)/2 (n = 2, 3) Reviewed

    N. Katayama, S. Onari, K. Matsubayashi, Y. Uwatoko, H. Sawa

      Vol. 6   page: 39280   2016.12

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  74. Absence of Jahn-Teller transition in the hexagonal Ba3CuSb2O9 single crystal

    N. Katayama, K. Kimura, Y. Han, J. Nasu, N. Drichiko, Y. Nakanishi, M. Halim, Y. Ishiguro, R. Satake, E. Nishibori, M. Yoshizawa, T. Nakano, Y. Nozue, Y. Wakabayashi, S. Ishihara, M. Hagiwara, H. Sawa, S. Nakatsuji

    Proceedings of the National Academy of Sciences of the United States of America   Vol. 112 ( 30 ) page: 9305   2015.7

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  75. Synchrotron X-ray diffraction study of the Structural Phase Transition in Ca10(Ir4As8)(Fe2-xIrxAs2)5

    Naoyuki Katayama, Kento Sugawara, Yuki Sugiyama, Takafumi Higuchi, Kazutaka Kudo, Daisuke Mitsuoka, Takashi Mizokawa, Minoru Nohara, and Hiroshi Sawa

    Journal of the Physical Society of Japan   Vol. 83   page: 113707   2014.11

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  76. Excitonic Bose-Einstein condensation above room temperature

    K. Seki, Y. Wakisaka, T. Kaneko, T. Toriyama, T. Konishi, T. Sudayama, N. L. Saini, M. Arita, H. Namatame, M. Taniguchi, N. Katayama, M. Nohara, H. Takagi, T. Mizokawa, and Y. Ohta

    Physical Review B   Vol. 90   page: 155116   2014.11

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    DOI: 155116

  77. Observation of quadrupole helix chirality and its domain structure in DyFe3(BO3)4

    T. Usui, Y. Tanaka, H. Nakajima, M. Taguchi, A. Chainani, M. Oura, S. Shin, N. Katayama, H. Sawa, Y. Wakabayashi, and T. Kimura

    Nature Materials   Vol. 13   page: 611   2014

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    DOI: 611

  78. Superconductivity in Ca1-xLaxFeAs2 : A Novel 112-Type Iron Pnictide with Arsenic Zigzag Bonds Reviewed

    N. Katayama, K. Kudo, S. Onari, T. Mizukami, K. Sugawara, Y. Sugiyama, M. Nohara, and H. Sawa

    Journal of the Physical Society of Japan   Vol. 82   page: 123702   2013.11

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  79. Superconductivity in Ca10(Ir4As8)(Fe2As2)5 with Square-Planar Coordination of Iridium Reviewed

    K. Kudo, D. Mitsuoka, M. Takasuga, Y. Sugiyama, K. Sugawara, N. Katayama, H. Sawa, H.S. Kubo, K. Takamori, M. Ichioka, T. Fujii, T. Mizokawa, and M. Nohara

    Scientific Reports   Vol. 3   page: 3101   2013.10

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  80. Conductivity and incommensurate antiferromagnetism of Fe1.02Se0.10Te0.90 under pressure Reviewed

    N. Katayama, K. Matsubayashi, Y. Nomura, S. Ji, J. Leao, M. A. Green, T. J. Sato, Y. Uwatoko, M. Fujita, K. Yamada, R. Arita and S.-H. Lee

    Europhysics Letters   Vol. 98   page: 37002   2012

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  81. Spin-Orbital Short-Range Order on a Honeycomb-Based Lattice Reviewed

    S. Nakatsuji, K. Kuga, K. Kimura, R. Satake, N. Katayama, E. Nishibori, H. Sawa, R. Ishii, M. Hagiwara, F. Bridges, T. U. Ito, W. Higemoto, Y. Karaki, M. Halim, A. A. Nugroho, J. A. Rodriguez-Rivera, M. A. Green, C. Broholm

    Science   Vol. 336   page: 559-563   2012

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  82. Photoemission Spectroscopy of Ta2NiSe5 Reviewed

    Y. Wakisaka, T. Sudayama, K. Takubo, T. Mizokawa, N. L. Saini, M. Arita, H. Namatame, M. Taniguchi, N. Katayama and M. Nohara, H. Takagi

    Journal of Superconductivity and Novel Magnetism   Vol. 25 ( 5 ) page: 1231-1234   2012

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  83. Pressure-induced changes in the magnetic and valence state of EuFe2As2

    K. Matsubayashi, K. Munakata, M. Isobe, N. Katayama, K. Ohgushi, Y. Ueda, N. Kawamura, M. Mizumaki, N. Ishimatsu, M. Hedo, I. Umehara, and Y. Uwatoko

    Physical Review B   Vol. 84   page: 024502   2011

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  84. Inelastic neutron scattering study of the magnetic fluctuations in Sr2RuO4 Reviewed

    K. Iida, M. Kofu, N. Katayama, J. Lee, R. Kajimoto, Y. Inamura, M. Arai, Y. Yoshida, M. Fujita, K. Yamada, and S.-H. Lee

    Physical Review B   Vol. 84   page: 060402(R)   2011

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  85. Orbital-Dependent Modifications of Electronic Structure across the Magnetostructural Transition in BaFe2As2

    T. Shimojima, K. Ishizaka, Y. Ishida, N. Katayama, K. Ohgushi, T. Kiss, M. Okawa, T. Togashi, X.-Y. Wang, C.-T. Chen, S. Watanabe, R. Kadota, T. Oguchi, A. Chainani, S. Shin

    Physical Review Letters   Vol. 104   page: 057002   2010

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  86. The local atomic structure of superconducting Fe-Se-Te

    Despina Louca, Kazumasa Horigane, Anna Llobet, Ryotaro Arita, Sungdae Ji, Naoyuki Katayama, Shun Konbu, Kazuma Nakamura, Tae-Yeong Koo, Peng Tong, Kazuyoshi Yamada

    Physical Review B   Vol. 81   page: 134524   2010

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  87. Coupling of spin and orbital excitations in an Fe-based superconductor

    S.-H. Lee, Guangyong Xu, W. Ku, J. S. Wen, C. C. Lee, N. Katayama, Z. J. Xu, S. Ji, Z. W. Lin, G. D. Gu, H.-B. Yang, P. D. Johnson, Z.-H. Pan, T. Valla, M. Fujita, T. J. Sato, S. Chang, K. Yamada, J. M. Tranquada

    Physical Review B   Vol. 81   page: 220502(R)   2010

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  88. Absence of nesting in the charge-density-wave system 1T-VS2 as seen by photoelectron spectroscopy

    M. Mulazzi, A. Chainani, N. Katayama, R. Eguchi, M. Matsunami, M. Oura, H. Ohashi,Y. Senba, M. Nohara, H. Takagi

    Physical Review B   Vol. 82   page: 075130   2010

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  89. Investigation of the spin-glass regime between the antiferromagnetic and superconducting phase in Fe1+ySexTe1-x

    N. Katayama, S. Ji, D. Louca, S.-H. Lee, M. Fujita, T. J. Sato, J. Wen, Z. Xu, G. Gu, G. Xu, Z. W. Lin, M. Enoki, S. Chang, K. Yamada, J. M. Tranquada

    Journal of the Physical Society of Japan   Vol. 79   page: 113702   2010

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  90. High-field studies on single crystals of EuFe2As2

    M. Tokunaga, I. Katakura, N. Katayama, K. Ohgushi

    Journal of Low Temperature Physics   Vol. 159   page: 601   2010

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  91. High-Pressure Ac Specific Heat Technique with Cubic Anvil Apparatus

    K. Matsubayashi, M. Hedo, I. Umehara, N. Katayama, K. Ohgushi, A. Yamada, K. Munakata, T. Matsumoto, Y. Uwatoko

    Journal of Physics: Conf. Ser.   Vol. 215   page: 012187   2010

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  92. Antiferromagnetism of SrFe2As2 studied by Single-Crystal 75As-NMR

    Kentaro Kitagawa, Naoyuki Katayama, Kenya Ohgushi, and Masashi Takigawa

    Journal of the Physical Society of Japan   Vol. 78   page: 063706   2009

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    Language:English   Publishing type:Research paper (scientific journal)  

  93. Excitonic Insulator State in Ta2NiSe5 Probed by Photoemission Spectroscopy

    Y. Wakisaka, T. Sudayama, K. Takubo, T. Mizokawa, M. Arita, H. Namatame, M. Taniguchi, N. Katayama, M. Nohara, H. Takagi

    Physical Review Letters   Vol. 103   page: 026402   2009

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  94. Spontaneous Formation of a Superconducting and Antiferromagnetic Hybrid State in SrFe2As2 under High Pressure

    K. Kitagawa, N. Katayama, H. Gotou, T. Yagi, K. Ohgushi, T. Matsumoto, Y. Uwatoko, M. Takigawa

    Physical Review Letters   Vol. 103   page: 257002   2009

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    Language:English   Publishing type:Research paper (scientific journal)  

  95. Anomalous metallic state in the vicinity of Metal to Valence Bond Solid insulator transition in LiVS2

    N. Katayama, M. Uchida, D. Hashizume, S. Niitaka, J. Matsuno, D. Matsumura, Y. Nishihata, J. Mizuki, N. Takeshita, A. Gauzzi, M. Nohara, and H. Takagi

    Physical Review Letters   Vol. 103   page: 146405   2009

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  96. Intrinsic properties of AFe2As2 (A = Ba, Sr) single crystals under highly hydrostatic pressure conditions

    Kazuyuki Matsubayashi, Naoyuki Katayama, Kenya Ohgushi, Atsushi, Yamada, Kouji Munakata, Takehiko Matsumoto, and Yoshiya Uwatoko

    Journal of the Physical Society of Japan   Vol. 78   page: 073706   2009

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    Language:English   Publishing type:Research paper (scientific journal)  

  97. Trimer V3+ Spin Singlet State and Pseudo Gap in LiVS2 Studied by 51V and 7Li Nuclear Magnetic Resonance

    Tetsu TANAKA, Yu KAWASAKI, Shigeki ENDOU, Satoshi KIMURA, Yukiichi IDETA, Yutaka KISHIMOTO, Takashi OHNO, Naoyuki KATAYAMA, Minoru NOHARA, and Hidenori TAKAGI

    Journal of the Physical Society of Japan   Vol. 78   page: 054709   2009

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  98. Variation in Electronic State of Ba(Fe1-xCox)2As2 Alloy as Investigated in Terms of Transport Properties

    N. Katayama, Y. Kiuchi, Y. Matsushita, K. Ohgushi

    Journal of the Physical Society of Japan   Vol. 78   page: 123702   2009

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    Language:English   Publishing type:Research paper (scientific journal)  

  99. Local Lattice Distortion and Photo-Induced Phase Transition in Transition-Metal Compounds with Orbital Degeneracy

    T. Mizokawa, K. Takubo, T. Sudayama, Y. Wakisaka, N. Takubo, K. Miyano, N. Matsumoto, S. Nagata, Katayama, M. Nohara, H. Takagi, M. Ikeda, N. Kojima, M. Arita, H. Namatame and M. Taniguchi

    Journal of Superconductivity and Novel Magnetism   Vol. 22   page: 67   2009

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  100. Commensurate Itinerant Antiferromagnetism in BaFe2As2: 75As-NMR Studies on a Self-Flux Grown Single Crystal

    Kentaro Kitagawa, Naoyuki Katayama, Kenya Ohgushi, Makoto Yoshida, and Masashi Takigawa

    Journal of the Physical Society of Japan   Vol. 77   page: 114709   2008

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    Language:English   Publishing type:Research paper (scientific journal)  

  101. 7Li- and 51V-NMR study of LiVS2

    T. Tanaka, Y. Kawasaki, Y. Takagishi, Y. Ideta, Y. Kishimoto, T. Ohno, N. Katayama, M. Nohara, and H. Takagi

    Journal of Physics and Chemistry of Solids   Vol. 69   page: 3142   2008

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    Language:English   Publishing type:Research paper (scientific journal)  

  102. Watery superconductivity in misfit-layer sulfides

    N. Katayama, M. Nohara, and H. Takagi

    Physica C   Vol. 445   page: 35   2006

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  103. Enhanced Superconducting Transition Temperature in the Water-intercalated Sulfides

    N. Katayama, M. Nohara, F. Sakai, and H. Takagi

    Journal of the Physical Society of Japan   Vol. 74   page: 851   2005

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▼display all

Books 2

  1. 異常高価数のCrをもつCrSe2の特異な逐次構造相転移 Reviewed

    小林慎太郎, 片山尚幸, 澤博( Role: Joint author)

    日本結晶学会誌  2020.12 

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    Total pages:2   Language:Japanese Book type:Textbook, survey, introduction

  2. 乱れに強い量子液体状態を示す銅酸化物磁性体の発見

    片山 尚幸、佐竹 隆太、西堀 英治、澤 博、中辻 知( Role: Joint author)

    公益財団法人 高輝度光科学研究センター  2011.11 

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    Language:Japanese

Presentations 107

  1. 無機固体で生じる分子形成現象 Invited

    片山尚幸

    第6回固体化学フォーラム  2024.1.16 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  2. 結晶構造の基礎知識に基づく放射光X線を用いた構造解析の実際 Invited

    片山尚幸

    京都大学理学部化学教室 化学特別講義(集中講義)  2024.1 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

  3. Vanadium trimerization and preliminarily appearing zigzag chain dynamics in vanadium chalcogenides with two-dimensional triangular lattice Invited International conference

    Naoyuki Katayama

    Electronic correlation and lattice anomaly in exotic transition-metal compounds: Multiorbital Mott/Slater phases and orbitally-induced excitonic/CDW phases  2023.3.3 

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    Event date: 2023.3

    Language:English   Presentation type:Oral presentation (invited, special)  

  4. 幾何学的フラストレーション系物質における量体化と短距離秩序の発達 Invited

    片山尚幸

    ISSP ワークショップ 高圧セミナー “最近の話題から”  2022.3.5 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  5. Observation of local atomic displacements intrinsic to the double zigzag chain structure of 1T-MTe2 (M = V, Nb, Ta) Invited

    Naoyuki Katayama

    2023.11.14 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  6. 新しい超伝導体を求めて Invited

    片山尚幸

    日本物理学会名古屋支部 公開講演会  2021.12.4 

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    Event date: 2021.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  7. 層状Li0.33VS2における3中心2電子σ結合形成に伴って現れる巨大なエントロピー変化 Invited

    片山尚幸

    第28回日本MRS年次大会  2018.12.18 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:小倉  

  8. Observation of local atomic displacements intrinsic to the double zigzag chain structure of 1T-MTe2 (M = V, Nb, Ta). International conference

    N. Katayama, Y. Matsuda, K. Kojima, H. Sawa

    MRM2023/IUMRS-ICA2023 Grand Meeting  2023.12.13 

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    Event date: 2023.12

    Presentation type:Oral presentation (general)  

  9. Various Arsenic Network Structures in 112-type Ca1-xLaxFe1-yPdyAs2 Revealed by Synchrotron X-ray Diffraction Experiments Invited International conference

    BIT's 5th Annual Congress of AnalytiX-2017 

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    Event date: 2017.3

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  10. エキシトニック絶縁体候補物質 Ta2NiSe5の高圧下放射光X線構造解析 Invited International conference

    片山尚幸

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:東海   Country:Japan  

  11. Deveopment of novel iron arsenides with arsenic network structures: 112-type Ca1-xLaxFeAs2 and its related materials International conference

    N. Katayama

    EMN Qingdao Meeting  

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    Event date: 2015.6

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:China  

  12. Superconductivity in Ca1-xLaxFeAs : A Novel 112-Type Iron Pnictide with Arsenic Zigzag Bonds Invited International conference

    Naoyuki KATAYAMA, Hiroshi SAWA, Kazutaka KUDO and Minoru NOHARA

    27th International Symposium on Superconductivity (ISS2014) 

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    Event date: 2014.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  13. 非摂動磁場による 量体化分子系の短距離秩序の切断 Invited

    片山尚幸

    1000テスラ科学 第3回領域会議   2024.4.19 

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    Event date: 2024.4

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  14. スピネル型 CuIr2S4 の X 線照射による分子破壊現象

    大橋翼, 小島慶太, 江見方敏, 小山千翔, 片山尚幸, 橋本賢太, 気谷卓, 川路均, 鈴木博之, 永田正一, 澤博

    1000テスラ科学 第3回領域会議   2024.4.20 

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    Event date: 2024.4

    Language:Japanese   Presentation type:Poster presentation  

    Venue:京都  

  15. δ-Ag2/3V2O5の低温アニールによる準安定秩序状態の実現

    久保泰星, 小島慶太, 片山尚幸, 礒部正彦, 澤博

    日本物理学会2024年春季大会  2024.3.19 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  16. スピネル型化合物CuIr2S4における圧力誘起構造相転移

    江見方敏, 小島慶太, 片山尚幸, 岡健太, 門林宏和, 河口沙織, 橋本賢太, 気谷卓, 澤博

    日本物理学会2024年春季大会  2024.3.18 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  17. Synchrotron X-ray structure analysis of Bi2Rh3Se2 single crystal Invited

    2024.3.5 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  18. ナノビームX線を用いた超秩序構造の時間分解回折構造研究 Invited

    片山尚幸

    超秩序構造科学 第6回成果報告会  2023.11.17 

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    Event date: 2023.11

    Presentation type:Oral presentation (invited, special)  

  19. Enhanced phase transition temperature associated with a short-range ordering of trimers in LiVO2 International conference

    Keita Kojima, Naoyuki Katayama, Yudai Matsuda, Manabu Shiomi, Rieko Ishii, Hiroshi Sawa

    International conference on complex orders in condensed matter: aperiodic order, local order, electronic order, hidden order  2023.9.26 

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    Event date: 2023.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Evian   Country:France  

  20. Slow dynamics of disordered zigzag chain molecules in layered LiVS2 International conference

    Naoyuki Katayama

    International conference on complex orders in condensed matter: aperiodic order, local order, electronic order, hidden order  2023.9.26 

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    Event date: 2023.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Evian   Country:France  

  21. スピネル型化合物CuIr2Se4の高圧下放射光X線構造解析

    江見方敏, 小島慶太, 片山尚幸, 松林和幸, 岡健太, 門林宏和, 河口沙織, 澤博

    日本物理学会 第78回年次大会  2023.9 

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    Event date: 2023.9

    Presentation type:Poster presentation  

  22. CuRh2X4(X=S,Se)の高圧力下電気抵抗・Hall効果測定

    唐澤知大, 松本凛之介, 江見方敏, 片山尚幸, 澤博, 松林和幸

    日本物理学会 第78回年次大会  2023.9 

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    Event date: 2023.9

    Presentation type:Poster presentation  

  23. 放射光X線回折によるδ-Ag2/3V2O5におけるAg秩序過程の観測

    久保泰星, 小島慶太, 片山尚幸, 澤博, 礒部正彦

    日本物理学会 第78回年次大会  2023.9 

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    Event date: 2023.9

    Presentation type:Poster presentation  

  24. 放射光X線回折による強力磁石Nd2Fe14Bの価電子密度観測

    小山千翔, 加藤宏朗, 廣澤哲, 原武史, 片山尚幸, 澤博

    日本物理学会 第78回年次大会  2023.9 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  25. Cu2-xZnxV2-yPyO7における電場誘起体積変化

    髙田航平, 八木健太, 片山尚幸, Leonard M. G. Chavas, 平井大悟郎, 竹中康司

    日本物理学会 第78回年次大会  2022.9 

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    Event date: 2023.9

    Presentation type:Oral presentation (general)  

  26. LiVS2の短距離秩序のダイナミクス観測を目的としたナノ集光X線を用いた時分割XAFS実験

    小島慶太, 片山尚幸, 宇留賀朋哉, 田渕雅夫, 澤博

    日本物理学会 第78回年次大会  2023.9 

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    Event date: 2023.9

    Presentation type:Oral presentation (general)  

  27. スピン軌道結合金属Pb2Re2O7-δにおける電気トロイダル四極子転移

    中山祐樹, 平井大悟郎, 佐賀山基, 小島慶太, 片山尚幸, 竹中康司

    日本物理学会 第78回年次大会  2023.9 

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    Event date: 2023.9

    Presentation type:Oral presentation (general)  

  28. 層状LiVSe2におけるバナジウムジグザグ鎖秩序の発達

    小島慶太, 片山尚幸, 杉本高大, 太田幸則, 澤博

    強相関電子系のフロンティア  2023.8 

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    Event date: 2023.8

    Presentation type:Poster presentation  

  29. 超秩序構造に対するナノビームX線を用いた次回分解回折構造研究 Invited

    片山尚幸

    学術変革領域研究A『超秩序構造科学』第2期公募研究キックオフミーティング  2023.4.22 

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    Event date: 2023.4

    Language:Japanese  

    Venue:名古屋工業大学  

  30. 化学基礎Iの授業実施の取り組みについて Invited

    片山尚幸

    名古屋大学教養教育院化学部会FD  2023.3.30  名古屋大学教養教育院化学部会FD

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  31. 層状LiVO2におけるV三量体フラストレーションの発見とその制御

    小島慶太、片山尚幸、松田悠大、塩見学、澤博   2023.1.16 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Poster presentation  

  32. RuPの高温相であらわれる量体化の前駆的格子ひずみの構造研究

    横田陽之, 小島慶太, 片山尚幸, 平井大悟郎, 澤博

    第11回 名古屋大学シンクロトロン光研究センターシンポジウム  2023.1.16 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Poster presentation  

  33. 放射光X線回折による直線型三量体を持つMTe2(M=V,Nb,Ta)の局所構造解析

    松田悠大、小島慶太、片山尚幸、澤博

    第11回 名古屋大学シンクロトロン光研究センターシンポジウム  2023.1.16 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Poster presentation  

  34. CuRh2Se4の高圧下における超伝導相を含む低対称化相の発見

    江見方敏、小島慶太、塩見学、片山尚幸、松林和幸、門林宏和、平尾直久、河口沙織、澤博

    第11回 名古屋大学シンクロトロン光研究センターシンポジウム  2023.1.16 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Poster presentation  

  35. 層状 Li0.5VS2 における非従来型結合形成を伴う逐次軌道秩序転移

    小島慶太、片山尚幸、飯田一樹、松川健、山本俊介、杉本高大、太田幸則、澤博

    日本物理学会 2022年秋季大会  2022.9 

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  36. 放射光X線非弾性散乱を用いたFeV2O4の特異なフォノン分散の観測

    萬條太駿、鬼頭俊介、片山尚幸、長谷川巧、石川大介、Alfred Q. R. Baron、勝藤拓郎、中村真一、澤博

    日本物理学会 第76回年次大会  2021.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  37. Vanadium trimers randomly aligned along the c-axis direction in layered LiVO2    International conference

    Keita Kojima, Naoyuki Katayama, Shinya Tamura, Manabu Shiomi, Hiroshi Sawa

    APS March Meeting 2021  2021.3  American Physical Society

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    Event date: 2021.3

    Language:English   Presentation type:Oral presentation (general)  

  38. Direct determination of Ti-3d1 orbital state in YTiO3 using synchrotron X-ray diffraction International conference

    Shunsuke Kitou, Taishun Manjo, Naoyuki Katayama, Tatsuya Shishidou, Taka-hisa Arima, Yasujiro Taguchi, Yoshinori Tokura, Toshikazu Nakamura, Toshihiko Yokoyama, Kunihisa Sugimoto, and Hiroshi Sawa

    APS March Meeting 2021  2021.3 

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    Event date: 2021.3

    Language:English   Presentation type:Oral presentation (general)  

  39. 混合原子価スピネル酸化物LiRh2O4の低温相構造解析

    塩見学, 小島慶太, 前田秦, 片山尚幸, 岡本佳比古, 澤博

    日本物理学会 第76回年次大会  2021.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  40. 励起子絶縁体関連物質Ta2Ni(Se1-xSx)5の高圧赤外分光

    松井勇太, 三木克哲, 溝川貴司, 魯楊帆, 片山尚幸, 野原実, 高木英典, 森脇太郎, 池本夕佳, 岡村英一

    日本物理学会 第76回年次大会 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Poster presentation  

  41. 元素置換したノーダルライン半金属CaAgPに現れる高移動度キャリアと超伝導

    岡本佳比古, 三枝一茂, 篠田祐作, 山影相, 山川洋一, 笹川崇男, 片山尚幸, 高津浩, 陰山洋, 竹中康司

    日本物理学会 第76回年次大会 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  42. 4f電子系パイロクロア磁性体NaLnTe2 (Ln = Ce, Pr, Nd)の合成と磁気的性質Ⅱ

    江藤昂樹, 岡本佳比古, 片山尚幸, 竹中康司

    日本物理学会 第76回年次大会 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  43. 1/2充填バンド構造を有する(TMTTF)X系の結晶構造

    張力東, 鬼頭俊介, 片山尚幸, 中村敏和, 澤博

    日本物理学会 第76回年次大会 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Poster presentation  

  44. 放射光X線回折を用いた3d軌道状態の直接観測

    鬼頭俊介、萬條太駿、片山尚幸、獅子堂達也、有馬孝尚、田口康二郎、十倉好紀、杉本邦久、澤博

    第34回日本放射光学会年会・放射光科学合同シンポジウム 

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    Event date: 2021.1

    Language:Japanese   Presentation type:Oral presentation (general)  

  45. FeとVが軌道自由度を有するスピネル型酸化物FeV2O4の3𝑑電子軌道状態の観測

    萬條太駿、鬼頭俊介、片山尚幸、野村悠祐、有田亮太郎、新居陽一、有馬孝尚、澤博

    日本物理学会 2020年秋季大会 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  46. 放射光X線を用いたコア差フーリエ合成法によるRTiO3における3d軌道状態の直接観測

    鬼頭俊介、萬條太駿、片山尚幸、獅子堂達也、有馬孝尚、田口康二郎、十倉好紀、杉本邦久、澤博

    日本物理学会 2020年秋季大会 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  47. β-パイロクロア酸化物CsW2O6の局所構造解析

    塩見学, 小島慶太, 片山尚幸, 岡本佳比古, 澤博

    日本物理学会 2020年秋季大会 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Poster presentation  

  48. LiVS2の数百μm級単結晶を用いた放射光X線散乱による構造物性研究

    小島慶太、片山尚幸、鬼頭俊介、竹田晋吾、田渕雅夫、澤博

    日本物理学会 2020年秋季大会 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  49. 新奇物質TMTTF-I塩における多彩な結晶構造

    細木雄斗、鬼頭俊介、片山尚幸、中村敏和、澤博

    日本物理学会 2020年秋季大会 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Poster presentation  

  50. 散漫散乱周期から決定する不定組成比τ型分子性導体のバンドフィリング

    原武史、鬼頭俊介、片山尚幸、吉野治一、澤博

    日本物理学会 2020年秋季大会 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Poster presentation  

  51. コア差フーリエ合成法によるAV2O4(A=Fe,Mn)における3dn電子軌道の観測

    萬條 太駿、鬼頭 俊介、片山 尚幸、新居 陽一、有馬 孝尚、勝藤 拓郎、澤 博

    日本物理学会 第75回年次大会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  52. コア差フーリエ合成法によるRTiO3における価電子密度分布の直接観測

    鬼頭俊介、萬條太駿、片山尚幸、獅子堂達也、有馬孝尚、田口康二郎、十倉好紀、横山利彦、中村敏和、杉本邦久、澤博

    日本物理学会 第75回年次大会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  53. 幾何学的フラストレート磁性体NaVS2-xSexの低温相転移

    前田秦, 片山尚幸, S. -H. Lee, 澤博

    日本物理学会 第75回年次大会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  54. 数百μm級LiVS2単結晶を用いた放射光X線構造研究

    小島慶太、片山尚幸、鬼頭俊介、竹田晋吾、田渕雅夫、澤博

    日本物理学会 第75回年次大会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  55. 放射光X線回折を用いたτ型有機伝導体の構造解析

    原武史, 鬼頭俊介, 片山尚幸, 吉野治一, 澤博

    日本物理学会 第75回年次大会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Poster presentation  

  56. 逆ペロフスカイト型マンガン窒化物微粒子の局所構造と熱膨張特性に対するアニール効果

    尾関将樹, 岡本佳比古, 片山尚幸, 竹中康司, 酒井雄樹, 東正樹, 塚崎裕文, 森茂生

    日本物理学会 第75回年次大会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Poster presentation  

  57. Honeycomb Lattice Type Charge-Density-Waves associated with Interlayer Cu Ions Ordering in Cu0.33TiSe2

    Shunsuke Kitou, Shintaro Kobayashi, Tatsuya Kaneko, Naoyuki Katayama, Seiji Yunoki, Toshikazu Nakamura, Hiroshi Sawa

    International Conference on Strongly Correlated Electron Systems 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

  58. 非弾性X線散乱実験を用いたCu0.33TiSe2におけるCuイオンダイナミクスの研究

    鬼頭俊介、中埜彰俊、長谷川巧、片山尚幸、筒井智嗣、中村敏和、横山利彦、澤博

    日本物理学会2019年秋大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Poster presentation  

  59. Liquid Dynamics of Orbital Molecules in High Temperature Paramagnetic Phase of Layered LiVS2

    K. Kojima, N. Katayama , S. Tamura, S. Hattori, K. Saitoh, H. Sawa

    International Conference on Strongly Correlated Electron Systems 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

  60. LiVS2のS-Se置換による短距離秩序構造の変化

    小島慶太、山口伴紀、塩見学、片山尚幸、太田幸則、澤博

    日本物理学会2019年秋大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  61. Sm1-xRxS(R:希土類元素)における価数揺動と体積変化機能

    水野陽介, 長谷川遥加, 浅井大悟, 横山泰範, 岡本佳比古, 片山尚幸, 鈴木博之, 今中康貴, 竹中康司

    日本物理学会2019年秋大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Poster presentation  

  62. 逆ペロフスカイト型マンガン窒化物微粒子の負熱膨張と局所構造の相関

    尾関将樹, 岡本佳比古, 片山尚幸, 竹中康司, 酒井雄樹, 東正樹, 塚崎裕文, 森茂生

    日本物理学会2019年秋大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Poster presentation  

  63. Cu2V2O7における異方的な結晶格子の熱変形と負熱膨張

    佐藤みく, 三田村昌也, 大塚健太郎, 片山尚幸, 岡本佳比古, 竹中康司

    日本物理学会2019年秋大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  64. 励起子絶縁体Ta2Ni1-xCoxSe5の時間分解光電子分光

    密岡拓心, 鈴木剛, 渡邉真莉, 藤澤正美, 金井輝人, 石井順久, 板谷治郎, 岡崎浩三, 辛埴, 野原実, 片山尚幸, 澤博, 魯楊帆, 高木英典, 溝川貴司

    日本物理学会2019年秋大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Poster presentation  

  65. 周波数領域角度分解光電子分光法によるTa2NiSe5における光誘起絶縁体金属転移の研究(理論)

    篠原康, 鈴木剛, 魯楊帆, 渡邉真莉, 徐佳笛, 高木英典, 野原実, 片山尚幸, 澤博, 藤澤正美, 金井輝人, 石井順久, 板谷治郎, 溝川貴司, 岡﨑浩三, 辛埴, 石川顕一

    日本物理学会2019年秋大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  66. 周波数領域角度分解光電子分光法によるTa2NiSe5における光誘起絶縁体金属転移の研究(実験)

    鈴木剛, 篠原康, 魯楊帆, 渡邉真莉, 徐佳笛, 高木英典, 野原実, 片山尚幸, 澤博, 藤澤正美, 金井輝人, 石井順久, 板谷治郎, 溝川貴司, 石川顕一, 岡﨑浩三, 辛埴

    日本物理学会2019年秋大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  67. 層状LiVS2の高温常磁性相で現れるジグザグ鎖分子の液体状態

    小島慶太、片山尚幸、田村慎也、服部颯介、齋藤晃、澤博

    第64回 物性若手夏の学校 

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    Event date: 2019.8

    Language:Japanese   Presentation type:Oral presentation (general)  

  68. 層状LiVO2における"Goodenoughの三量体"の同定

    小島慶太、片山尚幸、田村慎也、澤博

    第64回 物性若手夏の学校 

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    Event date: 2019.8

    Language:Japanese   Presentation type:Poster presentation  

  69. 複合自由度を活用した個体冷凍材料の開拓

    片山尚幸

    熱電気エネルギー技術財団 講演会 

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    Event date: 2019.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  70. Cu0.33TiSe2におけるCuイオンの秩序化に伴うハニカム格子型電荷密度波の形成

    鬼頭俊介、小林慎太郎、金子竜也、片山尚幸、柚木清司、中村敏和、澤博

    第4回固体化学フォーラム研究会 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Poster presentation  

  71. 層状LiVS2高温常磁性相で現れるジグザグ鎖分子の液体状態

    小島慶太、片山尚幸、田村慎也、服部颯介、齋藤晃、澤博

    第4回固体化学フォーラム研究会 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Poster presentation  

  72. スピン1/2ハニカム格子反強磁性体Cu2(pymca)3(ClO4)の強磁場磁化過程

    奥谷顕 他

    日本物理学会2017年春季大会 

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    Event date: 2017.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  73. 電子の多自由度に起因した高エントロピー蓄熱材料の開発 Invited International conference

    片山尚幸

    熱・電気エネルギー技術財団研究講演会 

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    Event date: 2016.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  74. 励起子絶縁体候補物質Ta2NiSe5の化学置換効果

    田村慎也, 中埜彰俊, 片山尚幸, 澤博

    日本物理学会2016春季大会 

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    Event date: 2016.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  75. β型パイロクロア酸化物CsW2O6単結晶の合成と物性

    二木健太, 岡本佳比古, 藤井達也, 片山尚幸, 澤博, 中村優斗, 岸田英夫, 竹中康司

    日本物理学会2016春季大会 

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    Event date: 2016.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  76. 構造物性の立場から見た励起子相

    澤博、中埜彰俊、鬼頭俊介、片山尚幸、松林和幸、岡田卓、上床美也、宗像孝司、中尾朗子、高木英典

    低次元電子系におけるエキシトニック相の新展開 

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    Event date: 2015.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  77. Ta2NiSe5 における圧力誘起半導体-半金属転移と超伝導

    松林和幸, 山中里奈, 久田旭彦, 岡田卓, 上床美也, 中埜彰俊, 片山尚幸, 澤博, 宗像孝司, 中尾朗子, 野原実,魯楊帆, 高木英典, 金子竜也, 鳥山達矢, 太田幸則, 溝川貴司

    低次元電子系におけるエキシトニック相の新展開 

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    Event date: 2015.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  78. 放射光 X 線回折を用いた励起子絶縁体 Ta2NiSe5の構造解析

    中埜彰俊、片山尚幸、佐賀山基、熊井玲児、松林和幸、岡田卓、上床美也、宗像孝司、中尾朗子、高木英典、澤博

    低次元電子系におけるエキシトニック相の新展開 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  79. Ta2Ni(Se1-xSx)5 の角度分解光電子分光

    千葉優、澤田慶、野田智博、杉本拓也、大槻太毅、溝川貴司、小林正起、堀場弘司、小野寛太、組頭広志、魯揚帆、中埜彰俊、片山尚幸、澤博、野原実、高木英典

    低次元電子系におけるエキシトニック相の新展開 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  80. Ta2NiSe5 の高圧下における光学伝導度と電子状態 International conference

    岡村英一、溝川貴司、片山尚幸、野原実、高木英典、森脇太郎、池本夕佳

    低次元電子系におけるエキシトニック相の新展開 

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    Event date: 2015.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  81. 励起子相を有する 1T-TiSe2の結晶構造

    鬼頭俊介、片山尚幸、丹田聡、澤博

    低次元電子系におけるエキシトニック相の新展開 

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    Event date: 2015.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  82. 放射光X線回折を用いた励起子絶縁体の構造解析

    中埜彰俊, 鬼頭俊介, 片山尚幸, 佐賀山基, 熊井玲児, 松林和幸, 岡田卓, 上床美也, 宗像孝司, 中尾朗子, 高木英典, 市村晃一, 丹田聡, 澤博

    日本物理学会 第70回年次大 

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  83. 新構造112型鉄ヒ化物の発見

    片山尚幸, 杉山由季, 菅原健人, 澤博

    日本物理学会 第70回年次大会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  84. 放射光X線超精密構造解析による3d軌道秩序の観測手法の開発

    藤井達也, 菅原健人, 樋口貴文, 片山尚幸, 澤博, 獅子堂達也, 杉本邦久, 高田昌樹, 有馬孝尚, 田口康二郎, 十倉好紀

    日本物理学会 第70回年次大会 

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  85. Observation of the spatial distribution of 3d1 electron in RTiO3 International conference

    Kento SUGAWARA, Tatsuya FUJII, Naoyuki KATAYAMA, Hiroshi SAWA, Kunihisa SUGIMOTO, Masaki TAKATA, Takahisa ARIMA, Yasujiro TAGUCHI, Yoshinori TOKURA

    IGER Workshop on Molecular Electronics for Young Researchers 

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    Event date: 2014.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  86. 112 型超伝導体 Ca1-xLaxFeAs2 における構造パラメータの x 依存性

    片山尚幸, 澤博, 工藤一貴, 野原実

    日本物理学会 第69回年次大会 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  87. 鉄ヒ素平面が三次元的に結合した新しい鉄ヒ化物の発見

    片山尚幸, 澤博, 松林和幸, 上床美也

    日本物理学会 第69回年次大会 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  88. 励起子絶縁体候補物質 Ta2NiSe5 の高圧下放射光X線構造解析

    中埜彰俊, 片山尚幸, 澤博, 松林和幸, 岡田卓, 上床美也, 宗像孝司, 中尾朗子, 野原実, 髙木英典

    日本物理学会 第69回年次大会 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  89. 鉄系超伝導体 Ca10(Ir4As8)(Fe2As2)5における構造相転移

    杉山由季,菅原健人, 樋口貴文,片山尚幸,澤博,溝川貴司,工藤一貴,光岡大輔、野原実

    日本物理学会 第69回年次大会 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  90. Observation of the spatial distribution of 3d1 electron in RTiO3 International conference

    Kento Sugawara, Tatsuya Fujii, Naoyuki Katayama, Hiroshi Sawa, Kunihisa Sugimoto, Masaki Takata, Takahisa Arima, Yasujiro Taguchi, Yoshinori Tokura

    International Conference on Strongly Correlated Electron System 

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    Event date: 2014.7

    Language:English   Presentation type:Poster presentation  

    Country:France  

  91. Novel iron based superconductors with arsenic bonding networks as a spacer layer International conference

    Naoyuki Katayama, Yuki Sugiyama, Kento Sugawara, Kazutaka Kudo, Minoru Nohara, Hiroshi Sawa

    International Conference on Strongly Correlated Electron System 

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    Event date: 2014.7

    Language:English   Presentation type:Poster presentation  

    Country:France  

  92. 新構造鉄ヒ化物の発見 -放射光X線による構造物性研究-

    片山尚幸

    高知大学強相関電子物性研究会 

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    Event date: 2014.5

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  93. Yb-Co-X新化合物の合成と物性評価

    岩谷誠,小松健良,西岡孝,片山尚幸,澤博,松林和幸,上床美也,北川健太郎

    日本物理学会2014 第69回年次大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  94. β-X [Pd(dmit)2]2 (X = Me4N, (FCH2)Me3N)における電子密度分布の精密解析

    菅原健人,伊藤優気,片山尚幸,澤博,野村光城,加藤礼三

    日本物理学会2014 第69回年次大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  95. 112型超伝導体Ca1-xLaxFeAs2の発見

    片山尚幸,杉山由季,菅原健人,澤博,大成誠一郎,工藤一貴,野原実

    日本物理学会2014 第69回年次大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  96. 平面四配位Ir4As8層を持つ鉄系超伝導体Ca10(Ir4As8)(Fe2As2)5の発見

    工藤一貴,光岡大輔,高須賀政哉,杉山由季,菅原健人,片山尚幸,澤博,久保宏昭,高森健太,市岡優典,藤井達生,溝川貴司,野原実

    日本物理学会2014 第69回年次大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  97. Yb-Co-X新化合物の物性評価とNMR

    北川健太郎,岩谷誠,小松健良,西岡孝,片山尚幸,澤博,松林和幸,上床美也

    日本物理学会2014 第69回年次大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  98. トポロジカル超伝導体候補物質CuxBi2Se3における放射光X線構造解析

    片山尚幸,菅原健人,澤博,瀬川耕司,安藤陽一

    日本物理学会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:徳島大学   Country:Japan  

  99. Ba3CuSb2O9の電子構造

    杉本拓也,溝川貴司,和達大樹,田久保康,A. Damascelli,T. Z. Regier,G. A. Sawatzky,片山尚幸,澤博,木村健太,中辻知

    日本物理学会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:徳島大学   Country:Japan  

  100. X-ray photoemission and x-ray absorption spectroscopy of Ba3CuSb2O9

    T. Sugimoto,T. Mizokawa,H. Wadati,K. Takubo,A. Damascelli,T. Regier,G. A. Sawatzky,N. Katayama,H. Sawa,K. Kimura,S. Nakatsuji

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    Event date: 2013.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  101. Ba3CuSb2O9単結晶の放射光X線構造解析 International conference

    佐竹隆太,片山尚幸,西堀英治,澤博,木村健太,中辻知,Collin Broholm

    日本物理学会第68回年次大会 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  102. Mott絶縁体RTiO3における3d軌道秩序の観測

    菅原健人,片山尚幸,西堀英治,澤博,杉本邦久,高田昌樹,有馬孝尚,田口康二郎,十倉好記

    日本物理学会 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  103. Observation of a valence electron cloud International conference

    Naoyuki Katayama, Eiji Nishibori and Hiroshi Sawa

    Highly Frustrated Magnetism 2012 

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    Event date: 2012.6

    Language:English   Presentation type:Poster presentation  

    Country:Canada  

  104. Structural study of Ba3CuSb2O9 using Synchrotron X-ray Diffraction International conference

    R. Satake, N. Katayama, E. Nishibori, H. Sawa, K. Kimura and S. Nakatsuji

    Highly Frustrated Magnetism 2012 

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    Event date: 2012.6

    Language:English   Presentation type:Poster presentation  

    Country:Canada  

  105. 放射光X線精密構造解析によるSmTiO3の軌道秩序の直接観測

    奥健太,片山尚幸,西堀英治,澤博,田口康二郎,有馬孝尚,十倉好紀

    日本物理学会2012春季大会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  106. Direct Observation of Charge Degrees of Freedom in Organic Charge-Transfer Complexes using Synchrotron Radiation X-ray International conference

    S. Maki, E. Nishibori, N. Katayama, T. Nakamura , H. Sawa

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  107. 温度変化ARPESからみたTa2NiSe5の相転移

    脇坂祐輝,須田山貴亮,田久保耕,溝川貴司,Naurang L. Saini,有田将司,生天目博文,谷口雅樹,片山尚幸,野原実,高木英典

    日本物理学会2011年秋季大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

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Research Project for Joint Research, Competitive Funding, etc. 3

  1. 巨大熱量変化材料の光制御

    2019.7

    2019年度研究費助成 

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    Grant type:Competitive

  2. 原子価結合固体の融解により現れる高温超伝導の探索

    2019.4 - 2020.3

    研究助成金 

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    Grant type:Competitive

  3. 電荷自由度を活用した高機能熱・エネルギー材料の創成

    2019.1 - 2020.1

    25周年記念特別 研究助成金 

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    Grant type:Competitive

KAKENHI (Grants-in-Aid for Scientific Research) 14

  1. 無機柔粘性結晶の構造的特徴を活用した革新的物質機能の開拓

    2024.4 - 2027.3

    日本学術振興会  学術研究助成基金助成金  基盤研究(B)(一般)

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    Authorship:Principal investigator 

    Direct Cost: \14300000 )

  2. 非摂動磁場による量体化分子系の短距離秩序の切断

    Grant number:24H01620  2024.4 - 2026.3

    科学研究費助成事業  学術変革領域研究(A)

    片山 尚幸

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    Authorship:Principal investigator 

    Grant amount:\5460000 ( Direct Cost: \4200000 、 Indirect Cost:\1260000 )

  3. 超秩序構造に対するナノビームX線を用いた時間分解回折構造研究

    Grant number:23H04104  2023.4 - 2025.3

    科学研究費助成事業  学術変革領域研究(A)

    片山 尚幸

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    Authorship:Principal investigator 

    Grant amount:\6500000 ( Direct Cost: \5000000 、 Indirect Cost:\1500000 )

    層状三角格子系LiVS2では、低温でバナジウムが自発的に集合した三量体「分子」の形成を生じる。高温に上げると、この三量体分子は消失し、レギュラーな三角格子が復活するものと考えられてきたが、最近の我々の研究により、このバナジウムの三角格子の内部において、数100nm程度の相関長を持つジグザグ鎖状の分子が出現し、配向を変えながらゆっくりと揺らいでいることがわかってきた。三角格子の中に潜むジグザグ鎖状の超秩序構造が示すダイナミクスと、温度変化に伴う相関長の変化を、時分割ナノビームX線回折法を用いて明らかにすることが本研究の目的である。

  4. Measurement of Physical Parameters of Lattice Dynamics in Inorganic Soft Matter

    Grant number:21K18599  2021.7 - 2023.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    Katayama Naoyuki

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    Authorship:Principal investigator 

    Grant amount:\6370000 ( Direct Cost: \4900000 、 Indirect Cost:\1470000 )

    We performed an experiment at BL36XU in SPring-8 to observe the lattice dynamics of vanadium chalcogenides, which have inorganic soft matter properties, by using time-resolved EXAFS measurements with deflected X-rays. We found that the spectra show a change with a period of about 0.6 s, which is consistent with the expected lattice dynamics. This result seems to capture the expected lattice dynamics, but contrary to our expectation, the change in the spectrum is periodic and there is no temperature dependence in the obtained spectrum, which is contrary to our expectation. We are currently analyzing the results and hope to clarify the nature of this feature in the future and prepare for submission of the paper.

  5. 自己組織化分子のスローダイナミクスが生み出す無機柔粘性結晶の開拓

    Grant number:20H02604  2020.4 - 2023.3

    科学研究費助成事業  基盤研究(B)

    片山 尚幸, 山内 徹, 齋藤 晃, 太田 幸則

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    Authorship:Principal investigator 

    Grant amount:\18070000 ( Direct Cost: \13900000 、 Indirect Cost:\4170000 )

    本課題では申請者が二次元三角格子系LiVS2で最近見出した、柔粘性結晶相発現の背景物理の解明と、同様の性質を示す新たな物質系の開発を目指す。LiVS2は314 K以下でバナジウム三量体化を伴う金属-非磁性絶縁体転移を示す。高温常磁性相では、バナジウムがジグザグ状の短距離秩序を形成しており、このジグザグ鎖の形成パターンが時間・空間的にゆっくりと変動する。ジグザグ鎖のパターンは3種類存在し、これらの配向はすべて異なることから、この格子ダイナミクスは無機化合物で実現した柔粘性結晶状態と定義される。同様の『無機柔粘性結晶』の新たな候補物質の開発を通じて、その発現メカニズムを明らかにすることを目指す。
    無機柔粘性結晶としての性質を示す新たな候補材料開発において大きな進展があった。スピネル化合物のLiRh2O4に着目し、放射光X線と中性子を相補的に用いた回折実験を行った。この物質は、約220 KでBand Jahn-Teller転移を示し、構造が立方晶から正方晶に変化した後、170 Kで金属絶縁体転移を示し、低温相は直方晶となることが報告されている。低温相においては電荷秩序を伴う量体化が期待され、中間温度相と高温相において柔粘性結晶的な格子ダイナミクスが期待される。我々は、放射光X線回折による平均構造解析と局所構造解析、中性子PDFによる局所構造解析を行い、得られたデータを対称性の議論をもとに整理することで、低温相における電荷秩序・量体化パターンが、有名なマグネタイトのVerwey転移を説明するために理論予想された「Anderson条件」と全く同じパターンを実現していることを明らかにした。また、この低温相の構造をベースとした放射光X線PDF解析により、中間温度相と高温相において無機柔粘性結晶を示唆すると思われる格子の低対称化が現れていることを明らかにした。以上の結果は、申請者を責任著者としてPhysical Review Bにletterとして掲載された。他にも本年度の活動の成果として、RuPやLiVSe2など、新たな候補物質を対象とした放射光X線構造研究が順調であり、柔粘性結晶候補物質となりうると期待している。以上のように、候補物質開拓には大きな成果が得られており、最終年度に向けて順調に研究が進められている。
    研究実績の概要で述べたように、候補物質の開拓という点においては期待以上の成果が得られたと考えている。一方で、LiVS2については、単結晶試料の育成には成功したものの、柔粘性結晶状態の示す格子ダイナミクスを定量的に同定するには至っておらず、最終年度に持ち越しとなった。以上の結果を踏まえて、(2) おおむね順調に進展している。が妥当であると判断した。
    本年度に明らかにした柔粘性結晶候補物質については、その特性や揺らぎの詳細を構造解析や物性測定などにより多角的に検証することで明らかにしていきたい。最終年度となることから、得られた成果については積極的に論文化を進め、本研究のまとめとする。LiVS2については、周波数依存性を伝導性から明らかにするなど、残された研究目的を実施することを目指す。

  6. 無機柔粘性結晶の構造的特徴を活用した革新的物質機能の開拓

    Grant number:24K01329  2024.4 - 2027.3

    科学研究費助成事業  基盤研究(B)

    片山 尚幸

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    Authorship:Principal investigator 

    Grant amount:\18590000 ( Direct Cost: \14300000 、 Indirect Cost:\4290000 )

  7. Elucidation of volumetric function mechanism in pyrovanadate Cu2V2O7

    Grant number:23H01837  2023.4 - 2026.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s) 

  8. Valence fluctuations and volumetric functions in samarium monosulfide SmS

    Grant number:20H00346  2020.4 - 2023.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Coinvestigator(s) 

  9. High-pressure study of exciton condensation and superconductivity

    Grant number:18H01172  2018.4 - 2021.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Matsubayashi Kazuyuki

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    We have constructed a comprehensive pressure-temperature phase diagram of the excitonic insulator Ta2NiSe5. In particular, a partial gap involving electron-lattice interaction appears in the high-pressure semimetallic phase, and superconductivity emerges around a critical pressure where the collapse of the gap is observed. We have also discovered pressure-induced superconductivity in BiS2-based layered compounds located near the semiconductor-semimetal transition and observed the similar phase diagram for Ta2NiSe5.

  10. Development of novel solid refregerating technique "battery referegeration"

    Grant number:17K17793  2017.4 - 2020.3

    Katayama Naoyuki

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    Authorship:Principal investigator 

    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

    LixVS2 systems show various structural transitions in low temperature accomapnied by the cluster formation accompanied by a large entropy change. In order to take advantage of the entropy change as a novel solid refregerating material, which can be obtained by using Li ion battery reactions, we investigated the Li battery applications and also studied the physical properties of each electric phases. As a result, we cannot attain a large entropy change by Li (de)intercalation process, we successfully identified novel electric phase of Li0.33VS2, where the linear vanadium trimer formation appears accompanied by a large entropy change. We reported the results as a paper and attained the patent relating to the material.

  11. Development of thermal expansion compensator utilizing giant negative thermal expansion of ruthenium oxides

    Grant number:17H02763  2017.4 - 2020.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Takenaka Koshi

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    Authorship:Coinvestigator(s) 

    We have improved the functionality and elucidated the mechanism of negative thermal expansion (NTE) in Ca2RuO4-y, which shows a huge NTE due to the material microstructural effects consisting of anisotropic thermal deformation of crystal grains and voids. By substituting Ru with Fe or Sn, the operating-temperature range could be expanded while maintaining the volume change related to NTE. Detailed electron diffraction and synchrotron radiation X-ray diffraction experiments have shown that the alignment and melting of electron orbitals associated with the previously overlooked monoclinic strain is essentially important. We found the Cu2V2O7 system as a NTE material with the same microstructural effect as Ca2RuO4-y, and succeeded in producing fine particles with a particle size of about 1 μm and exhibiting NTE characteristics comparable to bulk by the spray-drying method.

  12. 新しい固体冷凍技術「電池冷凍」の開発

    2017.4 - 2019.3

    科学研究費補助金  若手研究(B)

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    Authorship:Principal investigator 

  13. 三次元鉄ヒ化物超伝導体の創成

    2015.4 - 2017.3

    科学研究費補助金  若手研究(B)

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    Authorship:Principal investigator 

  14. 二次元三角格子系バナジウム硫化物におけるスピン・軌道・電荷複合物性と新奇基底状態

    2007.4 - 2009.3

    科学研究費補助金  生物物理・化学物理

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    Authorship:Principal investigator 

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Industrial property rights 2

  1. 負熱膨張材料および複合材料

    竹中康司, 岡本佳比古, 横山泰範, 片山尚幸

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    Applicant:竹中康司

    Application no:2018-110035  Date applied:2018.6

    Country of applicant:Domestic  

  2. 鉄系超電導物質及びその製造方法

    澤博、片山尚幸、細野秀雄、野原実、工藤一貴

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    Application no:2013-199997  Date applied:2013.9

    Date announced:2015.4

    Publication no:WO 2015/045733 

    Country of applicant:Domestic  

 

Teaching Experience (On-campus) 19

  1. Fundamentals of Chemistry I

    2022

  2. Introduction to Engineering Physics

    2021

  3. Fundamentals of Chemistry I

    2021

  4. Fundamentals of Chemistry I

    2020

  5. 学生実験第2第3

    2020

  6. Outline of Department of Physical Science and Engineering

    2020

  7. 先端材料と物性物理

    2016

  8. 学生実験第2第3

    2016

  9. 回折物理学特論

    2015

  10. 学生実験第2第3

    2015

  11. 学生実験第1

    2015

  12. 学生実験第2第3

    2014

  13. 学生実験第1

    2014

  14. 学生実験第2第3

    2013

  15. 学生実験第1

    2013

  16. 学生実験第1

    2012

  17. 学生実験第2第3

    2012

  18. 学生実験第1

    2011

  19. 学生実験第2第3

    2011

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Social Contribution 2

  1. 日本物理学会実行委員

    Role(s):Organizing member

    2019.4 - 2020.3

  2. 日本物理学会名古屋支部第76期支部役員

    Role(s):Organizing member