Updated on 2024/10/01

写真a

 
DEGUCHI, Kazuhiko
 
Organization
Graduate School of Science Lecturer
Graduate School
Graduate School of Science
Undergraduate School
School of Science Department of Physics
Title
Lecturer
Contact information
メールアドレス
External link

Degree 1

  1. Doctor of Philosophy in Physics ( 2004.3   Kyoto University ) 

Research Interests 5

  1. Quasicrystal

  2. Quantum Critical Phenomena

  3. Superconductivity

  4. Magnetism

  5. Strongly Correlated Electrons

Research Areas 5

  1. Natural Science / Magnetism, superconductivity and strongly correlated systems  / Magnetism, Superconductivity, Strongly Correlated Electrons

  2. Nanotechnology/Materials / Metallic material properties  / Quasicrystal, Electromagnetic Properties, Phase Diagram

  3. Nanotechnology/Materials / Applied physical properties  / Magnetic Materials, Superconductors

  4. Others / Others  / Physical Properties I

  5. Others / Others  / Physical Properties II

Current Research Project and SDGs 5

  1. ハイパーマテリアルの学理の創成

  2. 準結晶における強相関電子現象

  3. 量子臨界現象と特異点の普遍性

  4. スピン・トリプレット超伝導

  5. 重い電子系の磁性と超伝導

Research History 9

  1. Osaka University, Graduate School of Engineering Science, Part-time Lecturer   Osaka University, Graduate School of Engineering Science   Part-time Lecturer

    2024.4 - 2024.9

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    Country:Japan

  2. Niigata University, Graduate School of Science and Technology, Part-time Lecturer   Niigata University, Graduate School of Science and Technology   Part-time Lecturer

    2023.10 - 2024.3

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    Country:Japan

  3. Nagoya University, Department of Physics, Lecturer

    2015.12

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    Country:Japan

  4. INAC/SPSMS, CEA-Grenoble, France, Visiting Researcher

    2014.4 - 2015.3

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    Country:France

  5. INAC/SPSMS, CEA-Grenoble, France, Visiting Researcher

    2012.11 - 2013.1

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    Country:France

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Education 3

  1. Kyoto University   Graduate School, Division of Natural Science

    2001.4 - 2004.3

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    Country: Japan

  2. Kyoto University   Graduate School, Division of Natural Science

    1999.4 - 2001.3

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    Country: Japan

  3. Kyoto University   Faculty of Science

    1995.4 - 1999.3

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    Country: Japan

Professional Memberships 2

  1. The Physical Society of Japan

  2. The Japan Institute of Metals and Materials

Committee Memberships 3

  1. 物理学会第75回年次大会実行委員   委員  

    2018.12 - 2020.3   

  2. 日本物理学会領域6   運営委員  

    2018.4 - 2019.3   

  3. 日本物理学会領域8   運営委員  

    2013.3 - 2014.3   

Awards 6

  1. The 26th Outstanding Paper Award of the Physical Society of Japan

    2021.3   The Physical Society of Japan   Superconductivity of Au-Ge-Yb Approximants with Tsai-type Clusters

    Kazuhiko Deguchi, Mika Nakayama, Shuya Matsukawa, Keiichiro Imura, Katsumasa Tanaka, Tsutomu Ishimasa, Noriaki K. Sato

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

    The development of new superconductors and the elucidation of their non-trivial superconducting mechanisms have been vigorously studied globally. In particular, the following questions related to this area of research have been posed: "Does superconductivity appear in quasi crystals without crystal translational symmetry?" and "What is the mechanism of superconductivity?" Studies have been conducted to answer these perplexing questions.
    In this paper, the authors reported on the discovery of superconductivity for two novel Tsai-type cluster compounds: AGY(I) [Au64.0Ge22.0Yb14.0, Tc = 0.68 K] and AGY(II) [Au63.5Ge20.5Yb16.0, Tc = 0.36 K]. These are called "approximant crystals" and are located between ordinary crystals and "quasicrystals". In particular, in AGY(II), structural analysis has revealed that magnetic Yb ions occupy the center of the Tsai cluster, and the superconducting mechanism has been investigated in terms of its correlation with magnetism.
     Recently, the authors also discovered superconductivity (Tc = 0.05 K) in the "quasicrystal" Al-Zn-Mg [K. Kamiya, et al., Nat. Commun. 9, 154 (2018)], which is a development of this "approximant crystal," and non-trivial superconductivity has been investigated. In this paper, the first superconductivity in "approximant crystals," which is the cornerstone of "quasicrystals" showing superconductivity, is reported, and the mechanism is described as a curious superconductivity involving magnetic ions, which has a tremendous impact. For these reasons, we determined that the present paper deserves the Outstanding Paper Award of the Physical Society of Japan.

  2. 第27回堀科学芸術振興財団研究助成事業 第3部研究成果発表会・優秀賞

    2019.5   堀科学芸術振興財団  

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    Country:Japan

  3. JPSJ Paper of Editors' Choice

    2015  

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    Country:Japan

  4. JPSJ Paper of Editors' Choice

    2014  

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    Country:Japan

  5. JPSJ Paper of Editors' Choice

    2010  

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    Country:Japan

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Papers 106

  1. *Quantum critical state in a magnetic quasicrystal Reviewed

    K. Deguchi, S. Matsukawa, N.K. Sato, T. Hattori, K. Ishida, H. Takakura, T. Ishimasa

    Nature Materials   Vol. 11   page: 1013   2012

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

    DOI: 10.1038/nmat3432

  2. *Discovery of Superconductivity in Quasicrystal Reviewed

    K. Kamiya, T. Takeuchi, N. Kabeya, N. Wada, T. Ishimasa, A. Ochiai, K. Deguchi, K. Imura, N. K. Sato

    Nature Communications   Vol. 9   page: 154   2018

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

    DOI: 10.1038/s41467-017-02667-x

  3. Effects of Electron Correlation and Geometrical Frustration on Magnetism of Icosahedral Quasicrystals and Approximants — An Attempt to Bridge the Gap between Quasicrystals and Heavy Fermions Invited Reviewed

    N. K. Sato, T. Ishimasa, K. Deguchi, K. Imura

    J. Phys. Soc. Jpn.   Vol. 91   page: 072001   2022

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

    DOI: 10.7566/JPSJ.91.072001

  4. Concomitant singularities of Yb-valence and magnetism at a critical lattice parameter of icosahedral quasicrystals and approximants Reviewed

    K. Imura, H. Yamaoka, S. Yokota, K. Sakamoto, Y. Yamamoto, T. Kawai, K. Namba, S. Hirokawa, K. Deguchi, N. Hiraoka, H. Ishii, J. Mizuki, T. Ishimasa, N. K. Sato

    Scientific Reports   Vol. 10   page: 17116   2020

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

    DOI: 10.1038/s41598-020-74124-7

  5. *Superconductivity of Au-Ge-Yb Approximants with Tsai-type Clusters Reviewed

    K. Deguchi, M. Nakayama, S. Matsukawa, K. Imura, K. Tanaka, T. Ishimasa, N. K. Sato

    J. Phys. Soc. Jpn.   Vol. 84   page: 023705   2015

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

    DOI: 10.7566/JPSJ.84.023705

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Books 1

  1. Ruthenate and Rutheno-Cuprate Materials

    Y. Maeno, H. Yaguchi, K. Deguchi( Role: Joint author)

    Springer-Verlag  2002 

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    Language:English

Presentations 124

  1. Au-Al-Er 1/1近似結晶の低温磁性

    金井辰也, 桑野太郎, 谷口博基, 出口和彦

    日本物理学会  2024.9.17 

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    Event date: 2024.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  2. Ba(Ga1-xZnx)2O4-δにおける光誘電効果

    石川大斗, 出口和彦, 谷口博基

    日本物理学会  2024.9.19 

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    Event date: 2024.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  3. アルミネートソーダライト型化合物Sr8[AlO2]12{(S1-xWx)O4}2における誘電特性

    木下史音, 桑野太郎, 萩原学, 出口和彦, 谷口博基

    日本物理学会  2024.9.19 

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    Event date: 2024.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  4. アルミネートソーダライト型化合物Ca8[(Al1-xGax)O2]12{WO4}2の焦電特性

    齋藤稜晃, 出口和彦, 谷口博基

    日本物理学会  2024.9.19 

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    Event date: 2024.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  5. 間接型強誘電体アルミネートソーダライト型酸化物Ca8[(Al1-xGax)O2]12{WO4}2の弾性特性

    橋本友次郎, 齋藤稜晃, 桑野太郎, Michel Kuhfuß, Xi Shi, Neamul Khansur, Kyle Webber, 出口和彦, 谷口博基

    日本物理学会  2024.9.19 

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    Event date: 2024.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

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Research Project for Joint Research, Competitive Funding, etc. 6

  1. 非周期構造を利用した新機能物質開発

    2019.4 - 2022.3

  2. 準結晶における新機能物質探索 -悲周期系物質開発へのデータ科学の導入-

    2019.4 - 2020.3

  3. 非周期系に特有の物性と新機能物質探索

    2018.4 - 2019.3

  4. 強相関電子系準結晶に着目した新物性材料開発

    2015.4 - 2016.3

  5. Tsai-typeクラスター構造を持つ強相関電子系の磁気準結晶の研究

    2014.4 - 2015.3

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KAKENHI (Grants-in-Aid for Scientific Research) 12

  1. 理論と実験の協働による高次元で同一構造を持つ周期・非周期結晶の超伝導特性の解明

    2024.4 - 2029.3

    科学研究費補助金  基盤研究(B)

    出口 和彦

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    Authorship:Coinvestigator(s) 

  2. 準結晶における長距離秩序・新奇量子状態の探索と異常金属状態の研究

    2022.4 - 2026.3

    科学研究費補助金  基盤研究(B)

    出口 和彦

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    Authorship:Principal investigator 

  3. ハイパーマテリアルの物性とhidden orderの探索

    2019.6 - 2024.3

    科学研究費補助金  新学術領域研究(研究領域提案型)、課題番号:19H05821

    出口 和彦

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    Authorship:Principal investigator 

  4. ハイパーマテリアル:補空間が創る新物質科学

    2019.6 - 2024.3

    科学研究費補助金  新学術領域研究(研究領域提案型)、課題番号:19H05817

    出口 和彦

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    Authorship:Coinvestigator(s) 

  5. 強相関電子系準結晶に特有の電子状態と価数・磁気臨界状態の研究

    2018.4 - 2022.3

    科学研究費補助金  基盤研究(B)

    出口 和彦

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    Authorship:Principal investigator 

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Teaching Experience (On-campus) 62

  1. 物理学実験 I

    2024

  2. Condensed Matter Physics 3 (英語授業、オムニバス講義)

    2024

  3. 物性生物物理学特別講義(オムニバス講義)

    2024

  4. 物理学実験 II

    2024

  5. Condensed Matter Physics 3 (英語授業、オムニバス講義)

    2023

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Teaching Experience (Off-campus) 2

  1. 物性物理工学特別講義 I(集中講義)

    2024.7 Osaka University)

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    Level:Postgraduate 

  2. 先端科学技術総論(集中講義)

    2023.10 Niigata University)

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    Level:Postgraduate 

 

Social Contribution 13

  1. 横須賀高等学校 学部学科探究講座(高大連携講座)

    Role(s):Lecturer

    横須賀高等学校  学部学科探究講座  2022.10

  2. なごや環境大学共育講座(ノートルモンド名古屋主催2021年度後期講座 第1回目「食に活用できる科学を学ぼう!」)

    Role(s):Lecturer

    ノートルモンド名古屋  なごや環境大学共育講座  2021.11

  3. 横須賀高等学校 学部学科探究講座(高大連携講座)

    Role(s):Lecturer

    横須賀高等学校  学部学科探究講座  2021.10

  4. 材料の微細組織と機能性第133委員会第 246回研究会「ハイパーマテリアル の新物質科学」

    Role(s):Lecturer

    日本学術振興会133委員会  第 246回研究会「ハイパーマテリアル の新物質科学」  2020.12

  5. 名大出前授業in豊橋2020

    Role(s):Lecturer

    豊橋市地下資源館・視聴覚教育センター  あいちサイエンスフェスティバル  2020.11

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Media Coverage 13

  1. 1000億分の1メートルの違いが物質の性質を劇的に変える! ~正20面体クラスターの新機能を発見~ Internet

    日本の研究.com  2020.10

  2. Physics World 2018 Breakthrough of the Year - Superconductivity spotted in a quasicrystal Internet

    Physics World  2018.12

  3. Superconductivity spotted in a quasicrystal Internet

    Physics World  2018.4

  4. 名大、準結晶の超伝導材発見 Newspaper, magazine

    日刊工業新聞  2018.3

  5. ノーベル賞間違いなし、日本発「準結晶超伝導転移」 Internet

    JBpress、MSN、livedoorニュース  2018.3

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Academic Activities 5

  1. 第27回準結晶研究会 International contribution

    Role(s):Planning, management, etc.

    2023.2 - 2023.3

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  2. 10th International Conference on Aperiodic Crystals (Aperiodic 2022) International contribution

    Role(s):Planning, management, etc.

    2022.6

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  3. 物理学会第75回年次大会実行委員

    Role(s):Planning, management, etc.

    日本物理学会  2018.12 - 2020.3

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    Type:Academic society, research group, etc. 

  4. 日本物理学会領域6 運営委員

    Role(s):Planning, management, etc.

    日本物理学会  2018.4 - 2019.3

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    Type:Academic society, research group, etc. 

  5. 日本物理学会領域8 運営委員

    Role(s):Planning, management, etc.

    日本物理学会  2013.4 - 2014.3

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    Type:Academic society, research group, etc.