Faculty Profiles - TAKENAKA, Koshi

Papers - TAKENAKA, Koshi

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Progress of research in negative thermal expansion materials: Paradigm shift in the control of thermal expansion Invited Reviewed

K. Takenaka

Frontiers in Chemistry Vol. 6 page： 267-1 - 267-13 2018.7

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： 14102-1 - 14102-7 2017.1

Giant barocaloric effect enhanced by the frustration of the antiferromagnetic phase in Mn(3)GaN Reviewed

D. Matsunami, A. Fujita, K. Takenaka, and M. Kano

Nature Materials Vol. 14 page： 73 - 78 2015.1

Magnetovolume effects in manganese nitrides with antiperovskite structure Reviewed

K. Takenaka, M. Ichigo, T. Hamada, A. Ozawa, T. Shibayama, T. Inagaki, and K. Asano

Science and Technology of Advanced Materials Vol. 15 ( 1 ) page： 015009-1 - 015009-11 2014.2

Correlation-Driven Heavy-Fermion Formation in LiV(2)O(4) Reviewed

P. E. Jonsson, K. Takenaka, S. Niitaka, T. Sasagawa, S. Sugai, and H. Takagi

Physical Review Letters Vol. 99 ( 16 ) page： 167402-1 - 167402-4 2007.10

Increased Superconducting Transition Temperature and Upper Critical Field of a High-Entropy Antimonide Superconductor (RuRhPdIr)1-x Ptx Sb

Hirai, D; Uematsu, N; Muramatsu, Y; Deguchi, K; Shimura, Y; Onimaru, T; Takenaka, K

CHEMISTRY OF MATERIALS Vol. 36 ( 19 ) page： 9547 - 9556 2024.9

Electric field-induced volume change in pyro-vanadate-phosphates: Toward an alternative actuator architecture

Takada, K; Shibutani, J; Yagi, K; Ikawa, F; Yokoyama, Y; Hirai, D; Okamoto, Y; Katayama, N; Umena, Y; Chavas, LMGH; Hatano, T; Fujita, A; Takenaka, K

APPLIED PHYSICS LETTERS Vol. 125 ( 4 ) 2024.7

Odd-parity multipole order in the spin-orbit coupled metallic pyrochlore Pb2Re2O7-δ

Nakayama, Y; Hirai, D; Sagayama, H; Kojima, K; Katayama, N; Lehmann, J; Wang, ZQ; Ogawa, N; Takenaka, K

PHYSICAL REVIEW MATERIALS Vol. 8 ( 5 ) 2024.5

Anisotropic optical conductivity accompanied by a small energy gap in the one-dimensional thermoelectric telluride Ta4SiTe4

Matsunaga, F; Okamoto, Y; Yokoyama, Y; Takehana, K; Imanaka, Y; Nakamura, Y; Kishida, H; Kawano, S; Matsuhira, K; Takenaka, K

PHYSICAL REVIEW B Vol. 109 ( 16 ) 2024.4

Superconductivity in Ternary Germanide ScPdGe and Silicide ScPdSi

Shinoda, Y; Okamoto, Y; Yamakawa, Y; Takatsu, H; Kageyama, H; Hirai, D; Takenaka, K

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 93 ( 2 ) 2024.2

Fabrication of metal matrix composites with negative thermal expansion zinc pyrophosphate filler

Kasugai, R; Takano, K; Hirai, D; Takenaka, K

APPLIED PHYSICS LETTERS Vol. 124 ( 2 ) 2024.1

Giant Negative Thermal Expansion Materials: Progress of Research and Future Prospects

Takenaka, K

MATERIALS TRANSACTIONS Vol. 65 ( 3 ) page： 243 - 252 2024

Electroactive actuator composites using volume change induced by insulator-to-metal transition in VO2

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

Evidence of unconventional superconductivity on the surface of the nodal semimetal CaAg1-xPdxP

Yano, R; Nagasaka, S; Matsubara, N; Saigusa, K; Tanda, T; Ito, S; Yamakage, A; Okamoto, Y; Takenaka, K; Kashiwaya, S

NATURE COMMUNICATIONS Vol. 14 ( 1 ) 2023.10

Structural and Electronic Properties of a Triangular Lattice Magnet NaPrTe2 Compared with NaNdTe2 and NaTbTe2

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

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

Superconductivity in Ternary Scandium Telluride Sc6MTe2 with 3d, 4d, and 5d Transition Metals

Shinoda, Y; Okamoto, Y; Yamakawa, Y; Matsumoto, H; Hirai, D; Takenaka, K

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 92 ( 10 ) 2023.8

Superconductivity in High-Entropy Antimonide M1-x Pt x Sb (M = Equimolar Ru, Rh, Pd, and Ir)

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

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

温めると縮むセラミック微粒子を用いたプラスチックの熱膨張制御 Invited

竹中康司

プラスチックス Vol. 74 ( 2 ) page： 29 - 33 2023.2

Large magnetic-field-induced volume change in sintered chromium tellurides Reviewed

Y. Kubota, Y. Okamoto, T. Kanematsu, T. Yajima, D. Hirai, and K. Takenaka

Applied Physics Letters Vol. 122 ( 4 ) page： 042404-1 - 042404-6 2023.1

Systematic Study on the Role of the Third Zn-Site Element in Zn2−xMgxP2O7 Showing Giant Negative Thermal Expansion Reviewed

R. Kasugai, Y. Kadowaki, Y. Yokoyama, N. Katayama, Y. Okamoto, and K. Takenaka

Materials Transactions Vol. 64 ( 3 ) page： 638 - 642 2023

Electronic Properties of Pyrochlore-Type Ca2Ir2O7 Reviewed

Y. Nakayama, Y. Okamoto, D. Hirai, and K. Takenaka

Journal of the Physical Society of Japan Vol. 91 ( 12 ) page： 125002-1 - 125002-2 2022.12

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

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

Applied Physics Letters Vol. 121 ( 12 ) page： 121901-1 - 121901-7 2022.9

Complex magnetic phase diagram with a small phase pocket in a three-dimensional frustrated magnet CuInCr4S8 Reviewed

M. Gen, H. Ishikawa, A. Ikeda, A. Miyake, Z. Yang, Y. Okamoto, M. Mori, K. Takenaka, H. Sagayama, T. Kurumaji, Y. Tokunaga, T. Arima, M. Tokunaga, K. Kindo, Y. H. Matsuda, and Y. Kohama

Physical Review Research Vol. 4 ( 3 ) page： 033148-1 - 033148-13 2022.8

Development of Negative Thermal Expansion Fine Particles Invited Reviewed

K. Takenaka, Y. Okamoto, Y. Yokoyama, N. Katayama, Y. Kadowaki, K. Eto, J. Shibutani, M. Kano, R. Kasugai, N. Yamada

Journal of the Japan Society of Powder and Powder Metallurgy Vol. 69 ( 8 ) page： 350 - 355 2022.8

Large Magnetic-Field-Induced Strain at the Spin-Reorientation Transition in A-Site Ordered Spinel Oxide LiFeCr4O8

Okamoto, Y; Kanematsu, T; Kubota, Y; Yajima, T; Takenaka, K

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 91 ( 2 ) 2022.2

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

Takenaka, K; Kano, M; Kasugai, R; Takada, K; Eto, K; Kadowaki, Y; Yokoyama, Y; Katayama, N; Okamoto, Y

APPLIED PHYSICS EXPRESS Vol. 15 ( 2 ) 2022.2

Large Magnetic-Field-Induced Strain at the Spin-Reorientation Transition in the A-Site Ordered Spinel Oxide LiFeCr4O8 Reviewed

Y. Okamoto, T. Kanematsu, Y. Kubota, T. Yajima, and K. Takenaka

Journal of the Physical Society of Japan Vol. 91 ( 2 ) page： 023710-1 - 023710-4 2022.2

Structural phase transition and negative thermal expansion in Cu1.8Zn0.2V2-xPxO7 solid solutions Reviewed

K. Takenaka, M. Kano. R. Kasugai, K. Takada, K. Eto, Y. Kadowaki, Y. Yokoyama, N. Katayama, and Y. Okamoto

Applied Physic Express Vol. 15 ( 2 ) page： 025504-1 - 025504-5 2022.2

Structural phase transition and giant negative thermal expansion in pyrophosphate Zn2-xMgxP2O7

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

APPLIED PHYSICS LETTERS Vol. 119 ( 20 ) 2021.11

Structural phase transition and giant negative thermal expansion in pyrophosphate Zn2-xMgxP2O7 Reviewed

Y. Kadowaki, R. Kasugai, Y. Yokoyama, N. Katayama, Y. Okamoto, and K. Takenaka

Applied Physics Letters Vol. 119 ( 20 ) page： 201906-1 - 201906-5 2021.11

Giant negative thermal expansion of polycrystalline Ti2O3 induced by microstructural effects Reviewed

Y. Kadowaki, R. Kasugai, Y. Yokoyama, N. Katayama, Y. Okamoto, and K. Takenaka

Applied Physics Letters Vol. 119 ( 17 ) page： 171901-1 - 171901-5 2021.10

Pore Size Distributions Related with Spontaneous Purple Membrane Stacking in Porous Hydrogels

Karasawa, M; Yokoyama, Y; Takiguchi, K; Takahashi, H; Kikukawa, T; Sonoyama, M; Takenaka, K

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 90 ( 10 ) 2021.10

Origin and Absence of Giant Negative Thermal Expansion in Reduced and Oxidized Ca2RuO4 Reviewed International coauthorship

L. Hu, Y. C. Zhu, Y. W. Fang, M. Fukuda, T. Nishikubo, Z. Pan, Y. Sakai, S. Kawaguchi, H. Das, A. Machida, T. Watanuki, S. Mori, K. Takenaka, and M. Azuma

Chemistry of Materials Vol. 33 ( 19 ) page： 7665 - 7674 2021.10

Pore Size Distributions Related with Spontaneous Purple Membrane Stacking in Porous Hydrogels Reviewed

M. Karasawa, Y. Yokoyama, K. Takiguchi, H. Takahashi, T. Kikukawa, M. Sonoyama, and K. Takenaka

Journal of the Physical Society of Japan Vol. 90 ( 10 ) page： 103801-1 - 103801-5 2021.9

Superconductivity in Nb2Pd3Te5 and Chemically-Doped Ta2Pd3Te5

Higashihara, N; Okamoto, Y; Yoshikawa, Y; Yamakawa, Y; Takatsu, H; Kageyama, H; Takenaka, K

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 90 ( 6 ) 2021.6

Superconductivity in Nb2Pd3Te5 and Chemically-Doped Ta2Pd3Te5 Reviewed

N. Higashihara, Y. Okamoto, Y. Yoshikawa, Y. Yamakawa, H. Takatsu, H. Kageyama, and K. Takenaka

Journal of the Physical Society of Japan Vol. 90 ( 6 ) page： 063705-1 - 063705-4 2021.5

Giant Magneto-Volume and Magneto-Caloric Effects of Frustrated Antiferromagnet Mn3GaN under Hydrostatic Pressure

Takenaka, K; Sugiura, T; Kadowaki, Y; Ozeki, M; Okamoto, Y; Fujita, A

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 90 ( 4 ) 2021.4

Large magnetic-field-induced strain at the magnetic order transition in triangular antiferromagnet AgCrS2 Reviewed

T. Kanematsu, Y. Okamoto, and K. Takenaka

Applied Physics Letters Vol. 118 ( 14 ) page： 142404-1 - 142404-5 2021.4

Large magnetic-field-induced strain at the magnetic order transition in triangular antiferromagnet AgCrS2

Kanematsu, T; Okamoto, Y; Takenaka, K

APPLIED PHYSICS LETTERS Vol. 118 ( 14 ) 2021.4

Fabrication of Metal Matrix Composite Containing Manganese Nitride Showing Giant Negative Thermal Expansion by Compressive Torsion Processing Reviewed

K. Takenaka, K. Otsuka, Y. Okamoto, Y. Kume, and M. Kobashi

Materials Transactions Vol. 62 ( 5 ) page： 590 - 595 2021.3

Giant Magneto-Volume and Magneto-Caloric Effects of Frustrated Antiferromagnet Mn3GaN under Hydrostatic Pressure Reviewed

K. Takenaka, T. Sugiura, Y. Kadowaki, M. Ozeki, Y. Okamoto, and A. Fujita

Journal of the Physical Society of Japan Vol. 90 ( 4 ) page： 044601-1 - 044601-7 2021.3

Effects of salt and gel network structures on purple membrane stacking in hydrogels immobilized with poly(vinyl alcohol) Reviewed

Yokoyama, Y; Yano, S; Kurita, R; Karasawa, M; Tanaka, H; Takahashi, H; Kikukawa, T; Sonoyama, M; Takenaka, K

JOURNAL OF APPLIED PHYSICS Vol. 129 ( 1 ) page： 014701-1 - 014701-6 2021.1

Fabrication of Metal Matrix Composite Containing Manganese Nitride Showing Giant Negative Thermal Expansion by Compressive Torsion Processing

Takenaka, K; Otsuka, K; Okamoto, Y; Kume, Y; Kobashi, M

MATERIALS TRANSACTIONS Vol. 62 ( 5 ) page： 590 - 595 2021

Electrical and Thermal Transport Properties of the β-Pyrochlore Oxide CsW2O6 Reviewed

Okamoto, Y; Niki, K; Mitoka, R; Takenaka, K

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 89 ( 12 ) page： 124710-1 - 124710-5 2020.12

Large thermoelectric power factor in whisker crystals of solid solutions of the one-dimensional tellurides Ta4SiTe4 and Nb4SiTe4 Reviewed

Yoshikawa, Y; Wada, T; Okamoto, Y; Abe, Y; Takenaka, K

APPLIED PHYSICS EXPRESS Vol. 13 ( 12 ) page： 125505-1 - 125505-4 2020.12

Annealing effects on negative thermal expansion properties of ball-milled β-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

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

Okamoto, Y; Saigusa, K; Wada, T; Yamakawa, Y; Yamakage, A; Sasagawa, T; Katayama, N; Takatsu, H; Kageyama, H; Takenaka, K

PHYSICAL REVIEW B Vol. 102 ( 11 ) page： 115101-1 - 115101-6 2020.9

負熱膨張性微粒子による電子デバイスのサーマル・マネジメント Invited Reviewed

竹中康司

粉体および粉末冶金 Vol. 67 ( 9 ) page： 499 - 504 2020.9

Thermal Expansion and Volume Magnetostriction in Breathing Pyrochlore Magnets LiACr4X8 (A = Ga, In, X = O, S) Reviewed

Kanematsu, T; Mori, M; Okamoto, Y; Yajima, T; Takenaka, K

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 89 ( 7 ) page： 073708-1 - 073708-4 2020.7

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

Ozeki, M; Warne-Lang, V; Tsukasaki, H; Sakai, Y; Katayama, N; Okamoto, Y; Azuma, M; Mori, S; Takenaka, K

APPLIED PHYSICS EXPRESS Vol. 13 ( 7 ) page： 075501-1 - 075501-5 2020.7

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 ) page： 075207-1 - 075207-6 2020.7

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

Okamoto, Y; Amano, H; Katayama, N; Sawa, H; Niki, K; Mitoka, R; Harima, H; Hasegawa, T; Ogita, N; Tanaka, Y; Takigawa, M; Yokoyama, Y; Takehana, K; Imanaka, Y; Nakamura, Y; Kishida, H; Takenaka, K

NATURE COMMUNICATIONS Vol. 11 ( 1 ) page： 3144-1 - 3144-8 2020.6

Real spin and pseudospin topologies in the noncentrosymmetric topological nodal-line semimetal CaAgAs Reviewed

Hirose, HT; Terashima, T; Wada, T; Matsushita, Y; Okamoto, Y; Takenaka, K; Uji, S

PHYSICAL REVIEW B Vol. 101 ( 24 ) page： 245104-1 - 245104-10 2020.6

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

Takenaka, K; Sato, M; Mitamura, M; Yokoyama, Y; Katayama, N; Okamoto, Y

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

Magnetization process of the breathing pyrochlore magnet CuInCr4S8 in ultrahigh magnetic fields up to 150 T Reviewed

Gen, M; Okamoto, Y; Mori, M; Takenaka, K; Kohama, Y

PHYSICAL REVIEW B Vol. 101 ( 5 ) page： 054434-1 - 054434-9 2020.2

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

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

Effects of Y substitution on the electronic structure and charge dynamics of SmS Reviewed

Yokoyama, Y; Hasegawa, H; Mizuno, Y; Asai, D; Okamoto, Y; Suzuki, HS; Takehana, K; Imanaka, Y; Takenaka, K

PHYSICAL REVIEW B Vol. 100 ( 24 ) page： 245143-1 - 245143-7 2019.12

Superconductivity in PtSbS with a Noncentrosymmetric Cubic Crystal Structure

Mizutani Ryosuke, Okamoto Yoshihiko, Nagaso Hayate, Yamakawa Youichi, Takatsu Hiroshi, Kageyama Hiroshi, Kittaka Shunichiro, Kono Yohei, Sakakibara Toshiro, Takenaka Koshi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 88 ( 9 ) 2019.9

Hole-doped M(4)SiTe(4) (M=Ta, Nb) as an efficient p-type thermoelectric material for low-temperature applications Reviewed

Okamoto Yoshihiko, Yoshikawa Yuma, Wada Taichi, Takenaka Koshi

APPLIED PHYSICS LETTERS Vol. 115 ( 4 ) 2019.7

Valence fluctuations and giant isotropic negative thermal expansion in Sm(1-x)R(x)S (R= Y, La, Ce, Pr, Nd) Reviewed

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

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

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

Microstructural effects on negative thermal expansion extending over a wide temperature range in beta-Cu(1.8)Zn(0.2)V(2)O(7) Reviewed

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

APPLIED PHYSICS LETTERS Vol. 113 ( 18 ) 2018.10

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

Extended operating temperature window of giant negative thermal expansion in Sn-doped Ca(2)RuO(4) Reviewed

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

Applied Physics Letters Vol. 113 ( 7 ) page： 071902 (5 pags) 2018.8

Progress of Research in Negative Thermal Expansion Materials: Paradigm Shift in the Control of Thermal Expansion

Takenaka, K

FRONTIERS IN CHEMISTRY Vol. 6 2018.7

Inverse analysis of giant macroscopic negative thermal expansion of Ca(2)RuO(4-y) ceramics based on elasticity and structural topology optimization Reviewed

A. Takezawa, K. Takenaka, and X. P. Zhang

Applied Physics Express Vol. 11 ( 5 ) page： 055801 (4 pages) 2018.5

Inverse analysis of giant macroscopic negative thermal expansion of Ca2RuO4-&ITy&IT ceramics based on elasticity and structural topology optimization

Takezawa, A; Takenaka, K; Zhang, XP

APPLIED PHYSICS EXPRESS Vol. 11 ( 5 ) 2018.5

Large thermoelectric power factor in one-dimensional telluride Nb4SiTe4 and substituted compounds

Okamoto, Y; Wada, T; Yamakawa, Y; Inohara, T; Takenaka, K

APPLIED PHYSICS LETTERS Vol. 112 ( 17 ) 2018.4

Large thermoelectric power factor in one-dimensional telluride Nb(4)SiTe(4) and substituted compounds Reviewed

Y. Okamoto, T. Wada, Y. Yamakawa, T. Inohara, and K. Takenaka

Applied Physics Letters Vol. 112 ( 17 ) page： 173905 (5 pages) 2018.4

層状ルテニウム酸化物セラミックスの巨大負熱膨張 Invited

竹中康司

Fine Ceramics Report Vol. 36 ( 2 ) page： 51-56 2018.4

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

Okamoto, Y; Mori, M; Katayama, N; Miyake, A; Tokunaga, M; Matsuo, A; Kindo, K; Takenaka, K

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

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

Y. Okamoto, M. Mori, N. Katayama, A. Miyake, M. Tokunaga, A. Matsuo, K. Kindo, and K. Takenaka

Journal of the Physical society of Japan Vol. 87 ( 3 ) page： 034709 (8 pages) 2018.3

Observation of Dirac-like energy band and ring-torus Fermi surface associated with the nodal line in topological insulator CaAgAs

Takane, D; Nakayama, K; Souma, S; Wada, T; Okamoto, Y; Takenaka, K; Yamakawa, Y; Yamakage, A; Mitsuhashi, T; Horiba, K; Kumigashira, H; Takahashi, T; Sato, T

NPJ QUANTUM MATERIALS Vol. 3 2018.1

Observation of Dirac-like energy band and ring-torus Fermi surface associated with the nodal line in topological insulator CaAgAs Reviewed

D. Takane, K. Nakayama, S. Souma, T. Wada, Y. Okamoto, K. Takenaka, Y. Yamakawa, A. Yamakage, T. Mitsuhashi, K. Horiba, H. Kumigashira, T. Takahashi, and T. Sato

npj Quantum Materials Vol. 3 page： 1 (6 pages) 2018.1

Hall effect measurements of high-quality Mn3CuN thin films and the electronic structure

Matsumoto, T; Hatano, T; Urata, T; Iida, K; Takenaka, K; Ikuta, H

PHYSICAL REVIEW B Vol. 96 ( 20 ) 2017.11

Hall effect measurements of high quality Mn(3)CuN thin films and the electronic structure Reviewed

T. Matsumoto, T. Hatano, T. Urata, K. Iida, K. Takenaka, and H. Ikuta

Physical Review B Vol. 96 ( 20 ) page： 205153 2017.11

Giant negative thermal expansion in Fe-doped layered ruthenate ceramics Reviewed

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

Applied Physics Express Vol. 10 ( 11 ) page： 115501 2017.11

Giant negative thermal expansion in Fe-doped layered ruthenate ceramics

Takenaka, K; Shinoda, T; Inoue, N; Okamoto, Y; Katayama, N; Sakai, Y; Nishikubo, T; Azuma, M

APPLIED PHYSICS EXPRESS Vol. 10 ( 11 ) 2017.11

巨大負熱膨張材料：熱膨張制御のパラダイムシフト Invited Reviewed

竹中康司

セラミックス Vol. 52 ( 9 ) page： 584-589 2017.9

Spontaneous stacking of purple membranes during immobilization with physical cross-linked poly(vinyl alcohol) hydrogel with retaining native-like functionality of bacteriorhodopsin

Yokoyama, Y; Tanaka, H; Yano, S; Takahashi, H; Kikukawa, T; Sonoyama, M; Takenaka, K

JOURNAL OF APPLIED PHYSICS Vol. 121 ( 20 ) 2017.5

Large thermoelectric power factor at low temperatures in one-dimensional telluride Ta4SiTe4

Inohara, T; Okamoto, Y; Yamakawa, Y; Yamakage, A; Takenaka, K

APPLIED PHYSICS LETTERS Vol. 110 ( 18 ) 2017.5

Large thermoelectric power factor at low temperatures in one-dimensional telluride Ta(4)SiTe(4) Reviewed

T. Inohara, Y. Okamoto, Y. Yamakawa, A. Yamakage, and K. Takenaka

Applied Physics Letters Vol. 110 ( 18 ) page： 183901 2017.5

Spontaneous stacking of purple membranes during immobilization with physical cross-linked poly(vinyl alcohol) hydrogel with retaining native-like functionality of bacteriorhodopsin Reviewed

Y. Yokoyama, H. Tanaka, S. Yano, H. Takahashi, T. Kikukawa, M. Sonoyama, and K. Takenaka

Journal of Applied Physics Vol. 121 ( 20 ) page： 204701 2017.5

Colossal negative thermal expansion in reduced layered ruthenate

Takenaka, K; Okamoto, Y; Shinoda, T; Katayama, N; Sakai, Y

NATURE COMMUNICATIONS Vol. 8 2017.1

"Entropics": Science and engineering of caloric phenomena related to itinerant-electron magnetism and spin fluctuations

Fujita Asaya, Takenaka Koshi

INTERNATIONAL WORKSHOP ON ITINERANT-ELECTRON MAGNETISM Vol. 868 2017

Low Carrier Density Metal Realized in Candidate Line-Node Dirac Semimetals CaAgP and CaAgAs Reviewed

Y. Okamoto, T. Inohara1, A. Yamakage, Y. Yamakawa, and K. Takenaka

Journal of the Physical Society of Japan Vol. 85 ( 12 ) page： 123701 2016.12

Synthesis and superconducting properties of a hexagonal phosphide ScRhP Reviewed

T. Inohara, Y. Okamoto, Y. Yamakawa, and K. Takenaka

Journal of the Physical Society of Japan Vol. 85 ( 9 ) page： 094706 2016.9

マンガン窒化物焼結体の標準抵抗材料への応用 Reviewed

大江武彦, 金子晋久, 竹中康司

電気学会論文誌A Vol. 136 ( 7 ) page： 448-454 2016.7

Thermoelectric properties of antiperovskite calcium oxides Ca(3)PbO and Ca(3)SnO Reviewed

Y. Okamoto, A. Sakamaki, and K. Takenaka

Journal of Applied Physics Vol. 119 ( 20 ) page： 205106 2016.5

Superconductivity in the Hexagonal Ternary Phosphide ScIrP Reviewed

Y. Okamoto, T. Inohara, Y. Yamakawa, A. Yamakage, and K. Takenaka

Journal of the Physical Society of Japan Vol. 85 ( 1 ) page： 013704 2016.1

Matrix-filler interfaces and physical properties of metal matrix composites with negative thermal expansion manganese nitride Reviewed

K. Takenaka, K. Kuzuoka, and N. Sugimoto

Journal of Applied Physics Vol. 118 ( 8 ) page： 084902 2015.8

Manganese Nitride Compound Standard Resistor Reviewed

T. Oe, C. Urano, N. Kaneko, H. Eisaki, Y. Yoshida, A. Yamamoto, and K. Takenaka

IEEE Transactions on Instrumentation and Measurement Vol. 64 ( 6 ) page： 1446-1450 2015.6

Thermal expansion adjustable polymer matrix composites with giant negative thermal expansion filler Reviewed

K. Takenaka and M. Ichigo

Composites Science and Technology Vol. 104 page： 47-51 2014.9

Stripe-Induced High-Temperature Superconductivity in Cuprates Reviewed

S. Sugai, Y. Takayanagi, J. Nohara, R. Shiozaki, N. Hayamizu, T. Muroi, T. Hosokawa, H. Suzuki, Y. Sone, H. Mabuchi, K. Takenaka, and K. Okazaki

Journal of Superconductivity and Novel Magnetism Vol. 27 ( 4 ) page： 941-944 2014.1

逆ペロフスカイト型マンガン窒化物の磁気体積効果と巨大負熱膨張 Invited Reviewed

竹中康司

日本結晶学会誌 Vol. 55 ( 6 ) page： 331-339 2013.12

Ferromagnetic shape memory effects in tetragonally distorted antiperovskite manganese nitrides Reviewed

K. Takenaka, T. Hamada, T. Shibayama, and K. Asano

Journal of Alloys and Compounds Vol. 577 ( S1 ) page： S291-S295 2013.11

Sputter deposition and characterization of Mn(3)CuN thin films Reviewed

M. Aoyama, K. Takenaka, and H. Ikuta

Journal of Alloys and Compounds Vol. 577 ( S1 ) page： S314-S317 2013.11

Standard-resistor compounds with adjustable operating temperature Reviewed

T. Oe, C. Urano, N. Kaneko, M. Hadano, and K. Takenaka

Applied Physics Letters Vol. 103 ( 17 ) page： 173518 2013.10

Fine-Grained Antiperovskite Manganese Nitrides with Negative Thermal Expansion for Thermal Expansion Control of Light Transmitting Plastics Reviewed

M. Ichigo and K. Takenaka

Journal of the Japan Institute of Metals and Materials Vol. 77 ( 10 ) page： 415-418 2013.10

Superconducting pairing and the pseudogap in the nematic dynamical stripe phase of La(2-x)Sr(x)CuO(4) Reviewed

S. Sugai, Y. Takayanagi, N. Hayamizu, T. Muroi, R. Shiozaki, J. Nohara, K. Takenaka, and

Journal of Physics: Condensed Matter Vol. 25 ( 47 ) page： 475701 2013.10

Correlation between Raman sum and optical conductivity sum in La(2-x)Sr(x)CuO(4) Reviewed

S. Sugai, J. Nohara, R. Shiozaki, T. Muroi, Y. Takayanagi, N. Hayamizu, K. Takenaka, and K. Okazaki

Journal of Physics: Condensed Matter Vol. 25 ( 10 ) page： 415701 2013.9

Application of Mn(3)Ag(1-x)Cu(x)N Antiperovskite Compound to Standard Resistor Reviewed

T. Oe, C. Urano, M. Hadano, A. Ozawa, K. Takenaka, and N. Kaneko

IEEE Transactions on Instrumentation and Measurement Vol. 62 ( 6 ) page： 1450-1453 2013.6

Thermal Expansion Adjustable Metal Matrix Composites Containing Manganese Nitrides with Negative Thermal Expansion Reviewed

N. Sugimoto, T. Hamada, and K. Takenaka

Journal of the Japan Institute of Metals and Materials Vol. 77 ( 3 ) page： 75-79 2013.3

Fabrication of Manganese Nitride Mn(3)CuN Thin Films by Ultrahigh-Field Sputtering and Their Characterization Reviewed

K. Matsumoto, M. Aoyama, K. Takenaka, and H. Ikuta

Journal of the Japan Institute of Metals and Materials Vol. 77 ( 3 ) page： 80-84 2013.3

Selective Raman Scattering Detection of the Dirac Node and the Anti-node of the Spin Density Wave Gap and Magnetic Excitations in BaFe(2)As(2) Reviewed

S. Sugai, Y. Mizuno, R. Watanabe, T. Kawaguchi, K. Takenaka, H. Ikuta, K. Kiho, M. Nakajima, C. H. Lee, A. Iyo, H. Eisaki, and S. Uchida

Journal of Superconductivity and Novel Magnetism Vol. 26 ( 4 ) page： 1179-1183 2013

Tailoring thermal expansion in metal matrix composites blended by antiperovskite manganese nitrides exhibiting giant negative thermal expansion Reviewed

K. Takenaka, T. Hamada, D. Kasugai, and N. Sugimoto

Journal of Applied Physics Vol. 112 ( 8 ) page： 083517 2012.10

低膨張樹脂複合材料－負熱膨張性マンガン窒化物による熱膨張制御－ Invited

竹中康司

プラスチックス Vol. 63 ( 8 ) page： 32-35 2012.8

Giant magnetostriction in tetragonally distorted antiperovskite manganese nitrides Reviewed

T. Shimizu, T. Shibayama, K. Asano, and K. Takenaka

Journal of Applied Physics Vol. 111 ( 7 ) page： 07A903 2012.4

Giant Field-Induced Distortion in Mn(3)SbN at Room Temperature Reviewed

K. Takenaka, T. Shibayama, D. Kasugai, and T. Shimizu

Japanese Journal of Applied Physics Vol. 51 ( 4 ) page： 043001 2012.4

Effects of nitrogen deficiency on the magnetostructural properties of antiperovskite manganese nitrides Reviewed

D. Kasugai, A. Ozawa, T. Inagaki, and K. Takenaka

Journal of Applied Physics Vol. 111 ( 7 ) page： 07E314 2012.4

Interplay between magnetism and charge transport in antiperovskite manganese nitrides: Extremely low temperature coefficient of resistance due to strong magnetic scattering Reviewed

M. Hadano, A. Ozawa, K. Takenaka, N. Kaneko, T. Oe, and C. Urano

Journal of Applied Physics Vol. 111 ( 7 ) page： 07E120 2012.4

Ferromagnetic microstructures in the ferromagnetic metallic phase of La(0.825)Sr(0.175)MnO(3) Reviewed

T. Koyama, Y. Togawa, K. Takenaka, and S. Mori

Journal of Applied Physics Vol. 111 ( 7 ) page： 07B104 2012.4

Phase instability of magnetic ground state in antiperovskite Mn(3)ZnN: Giant magnetovolume effects related to magnetic structure Reviewed

T. Hamada and K. Takenaka

Journal of Applied Physics Vol. 111 ( 7 ) page： 07A904 2012.4

Negative thermal expansion materials: technological key for control of thermal expansion Invited Reviewed

K. Takenaka

Science and Technology of Advanced Materials Vol. 13 ( 1 ) page： 013001 2012.2

Spin-Density-Wave Gap with Dirac Nodes and Two-Magnon Raman Scattering in BaFe(2)As(2) Reviewed

S. Sugai, Y. Mizuno, R. Watanabe, T. Kawaguchi, K. Takenaka, H. Ikuta, Y. Takayanagi, N. Hayamizu, and Y. Sone

J. Phys. Soc. Jpn. Vol. 81 ( 2 ) page： 024718 2012.2

負熱膨張性マンガン窒化物を用いた熱膨張可変複合材料 Invited

竹中康司

セラミックス Vol. 46 ( 11 ) page： 960-964 2011.11

Magnetic state of Mn(3)CuN explored by soft x ray magnetic circular dichroism Reviewed

K. Takenaka, T. Shibayama, A. Ozawa, T. Hamada, T. Nakamura, K. Kodama, and T. Kinoshita

J. Appl. Phys. Vol. 110 ( 2 ) page： 023909 2011.6

Multiple-charge modulations in the ferromagnetic insulating state of lightly doped La(1-x)Sr(x)MnO(3) Reviewed

T. Asaka, S. Mori, Y. Horibe, K. Takenaka, X. Z. Yu, T. Nagai, K. Kimoto, T. Hirayama, and Y. Matsui

Phys. Rev. B Vol. 83 ( 17 ) page： 174401 2011.5

Giant magnetostriction in antiperovskite Mn(3)CuN Reviewed

T. Shibayama and K. Takenaka

J. Appl. Phys. Vol. 109 ( 7 ) page： 07A928 2011.4

Giant negative thermal expansion in antiperovskite manganese nitrides Reviewed

T. Hamada and K. Takenaka

J. Appl. Phys. Vol. 109 ( 7 ) page： 07E309 2011.4

The Nodal SDW Gap and the Superconducting Gap in BaFe(2-x)Co(x)As(2) Reviewed

J. Supercond. Novel Magn. Vol. 24 ( 3 ) page： 1185-1189 2011.1

Extremely low temperature coefficient of resistance in antiperovskite Mn(3)Ag(1-x)Cu(x)N Reviewed

K. Takenaka, A. Ozawa, T. Shibayama, N. Kaneko, T. Oe, and C. Urano

Appl. Phys. Lett. Vol. 98 ( 2 ) page： 022103 2011.1

温めると縮む金属の物理 Invited Reviewed

竹中康司

日本物理学会誌 Vol. 65 ( 11 ) page： 873-877 2010.11

Magnetostructural Correlations in Nitrogen-Deficient Antiperovskite Mn(3)CuN(1-δ) Reviewed

K. Takenaka, T. Shibayama, K. Asano, and K. Koyama

Journal of the Physical Society of Japan Vol. 79 ( 7 ) page： 073706 2010.7

In site growth of superconducting NdFeAs(O, F) thin films by molecular beam epitaxy Reviewed

T. Kawaguchi, H. Uemura, T. Ohno, M. Tabuchi, T. Ujihara, K. Takenaka, Y. Takeda, and H. Ikuta

Appl. Phys. Lett. Vol. 97 ( 4 ) page： 042509 2010.7

Evidence for a Correlated Insulator to Antiferromagnetic Metal Transition in CrN Reviewed

P. A. Bhobe, A. Chainani, M. Taguchi, T. Takeuchi, R. Eguchi, M. Matsunami, K. Ishizaka, Y. Takata, M. Oura, Y. Senba, H. Ohashi, Y. Nishino, M. Yabashi, K. Tamasaku, T. Ishikawa, K. Takenaka, H. Takagi, and S. Shin

Physical Review Letters Vol. 104 ( 23 ) page： 236404 2010.6

Gradual development of Gannma 5g antiferromagnetic moment in the giant negative thermal expansion material Mn(3)Cu(1-x)Ge(x)N (x~0.5) Reviewed

K. Kodama, S. Iikubo, K. Takenaka, M. Takigawa, H. Takagi, and S. Shamoto

Physical Review B Vol. 82 ( 22 ) page： 224419 2010.6

Lorentz transmission electron microscopy observation of magnetic domains in La0.825Sr0.175(Mn, Al)O3 Reviewed

S. Mori, K. Yoshidome, Y. Nagamine, Y. Togawa, K. Yoshii, and K. Takenaka

Journal of Applied Physics Vol. 107 ( 9 ) page： 09D306 2010.5

Mechanical Properties of Metallic Perovskite Mn(3)Cu(0.5)Ge(0.5)N: High-Stiffness Isotropic Negative Thermal Expansion Material Reviewed

Y. Nakamura, K. Takenaka, A. Kishimoto, and H. Takagi

Journal of the American Ceramic Society Vol. 92 ( 12 ) page： 2999-3003 2009.12

Conversion of magnetic structure by slight dopants in geometrically frustrated antiperovskite Mn(3)GaN Reviewed

K. Takenaka, T. Inagaki, and H. Takagi

Applied Physics Letters Vol. 95 ( 13 ) page： 132508 2009.10

Eptitaxial Growth of NdFeAsO Thin Films by Molecular Beam Epitaxy Reviewed

T. Kawaguchi, H. Uemura, T. Ohno, R. Watanabe, M. Tabuchi, T. Ujihara, K. Takenaka, Y. Takeda, and H. Ikuta

Applied Physics Express Vol. 2 ( 9 ) page： 093002 2009.9

Effect of Ln-Site Disorder on Tc of Oxypnictide Superconductor LnFeAsO(1-x)F(x) (Ln = Nd, Ce-Gd, and La-Dy) Reviewed

K. Takenaka, R. Watanabe, H. Yamada, M. Tabuchi, Y. Takeda, and H. Ikuta

Journal of the Physical Society of Japan Vol. 78 ( 7 ) page： 073701 2009.7

Local structure anomaly around Ge dopants in Mn(3)Cu(0.7)Ge(0.3)N with negative thermal expansion Reviewed

J. Matsuno, K. Takenaka, H. Takagi, D. Matsumura, Y. Nishihata, and J. Mizuki

Applied Physics Letters Vol. 94 ( 18 ) page： 181904 2009.5

逆ペロフスカイト型マンガン窒化物Mn(3)CuNの磁歪 Invited Reviewed

竹中康司, 浅野和子

まてりあ Vol. 48 ( 3 ) page： 105-110 2009.3

Zero thermal expansion in a pure-form antiperovskite manganese nitride Reviewed

K. Takenaka and H. Takagi

Applied Physics Letters Vol. 94 ( 13 ) page： 131904 2009.3

Local Lattice Distortion in Giant Negative Thermal Expansion Material Mn(3)Cu(1-x)Ge(x)N Reviewed

S. Iikubo, K. Kodama, K. Takenaka, H. Takagi, M. Takigawa, and S. Shamoto

Physical Review Letters Vol. 101 ( 20 ) page： 205901 2008.11

マンガン窒化物を用いた単一物質ゼロ膨張材料の開発 Invited

竹中康司

Material Stage Vol. 8 ( 4 ) page： 1-3 2008.7

Magnetostriction in Mn(3)CuN Reviewed

K. Asano, K. Koyama, and K. Takenaka

Applied Physics Letters Vol. 92 ( 16 ) page： 161909 2008.4

Magnetovolume effect in Ma(3)Cu(1-x)Ge(x)N related to the magnetic structure: Neutron powder diffraction measurements Reviewed

S. Iikubo, K. Kodama, K. Takenaka, H. Takagi, and S. Shamoto

Physical Review B Vol. 77 ( 2 ) page： 020409(R) 2008.1

Negative thermal expansion in Ge-free antiperovskite manganese nitrides: Tin-doping effect Reviewed

K. Takenaka, K. Asano, M. Misawa, and H. Takagi

Applied Physics Letters Vol. 92 ( 1 ) page： 011927 2008.1

Electric Resistivity and Phase Diagram Viewed from Charges in La(2-x)Sr(x)CuO(4) Reviewed

S. Sugai, Y. Takayanagi, J. Nohara, R. Shiozaki, and K. Takenaka

Journal of the Physical Society of Japan Vol. 76 ( 4 ) page： 043710 2007

Observation of magnetic domain structures in La(1-x)Sr(x)Mn(3) Reviewed

T. Asaka, S. Mori, Y. Horibe, K. Takenaka, K. Ishizuka, K. Kimoto, and Y. Matsui

Journal of Magnetism and Magnetic Materials Vol. 310 ( 2 ) page： 782-784 2007

希少・有害元素代替のための3d多元系機能材料の開発研究 Reviewed

藤田麻哉, 藤枝俊, 西野洋一, 土谷浩一, 福田隆, 竹中康司, 貝沼亮介, 深道和明

日本金属学会誌 Vol. 71 ( 10 ) page： 876-884 2007

Reply to Comment on `Collapse of Coherent Quasiparticle States in θ-(BEDT-TTF)2I3 Observed by Optical Sectroscopy' Reviewed

K. Takenaka, M. Tamura, N. Tajima, H. Takagi, J. Nohara, and S. Sugai

Physical Review Letters Vol. 98 ( 21 ) page： 219803 2007

Magnetovolume Effect and Negative Thermal Expansion in Mn3(Cu1-xGex)N Reviewed

K. Takenaka and H. Takagi

Materials Transactions Vol. 47 ( 3 ) page： 471-474 2006

巨大負膨張を示す逆ペロフスカイト型マンガン窒化物 Invited

竹中康司

固体物理 Vol. 41 ( 7 ) page： 361-368 2006

Mn3(Cu1-xGex)Nの磁気体積効果と負膨張 Reviewed

竹中康司, 高木英典

日本金属学会誌 Vol. 70 ( 9 ) page： 764-768 2006

Giant negative thermal expansion in Ge-doped antiperovskite manganese nitrides Reviewed

K. Takenaka and H. Takagi

Applied Physics Letters Vol. 87 ( 26 ) page： 261902 2005.12

Collapse of Coherent Quasiparticle States in θ-(BEDT-TTF)2I3 Observed by Optical Spectroscopy Reviewed

K. Takenaka, M. Tamura, N. Tajima, H. Takagi, J. Nohara, and S. Sugai

Physical Review Letters Vol. 95 ( 22 ) page： 227801 2005.11

Tomonaga-Luttinger Liquid-Fermi Liquid Transition in Chain of PrBa(2)Cu(4)O(8) Reviewed

S. Sugai, N. Kaji, A. Osuka, K. Takenaka, S. Horii, and H. Ikuta

Journal of the Physical Society of Japan Vol. 74 ( 3 ) page： 871-874 2005

The Phonon Modes with Strong Electron-Phonon Interactions in p- and n-Type High Tc Superconductors Reviewed

S. Sugai, Y. Takayanagi, H. Suzuki, N. Hyamizu, Y. Sone, H. Mabuchi, T. Hosokawa, T. Muroi, J. Nohara, R. Shiozaki, and K. Takenaka

Journal of Superconductivity Vol. 18 ( 5-6 ) page： 779-783 2005

Spectroscopic evidence for the low-temperature charge-separated state of [Pd(dmit)2] salts Reviewed

M. Tamura, K. Takenaka, H. Takagi, S. Sugai, A. Tajima, and R. Kato

Chemical Physics Letters Vol. 411 ( 1-3 ) page： 133-137 2005

Universality of the Mott-Ioffe-Regel limit in metals Reviewed

N. E. Hussey, K. Takenaka, and H. Takagi

Philosophical Magazine Vol. 84 ( 27 ) page： 2847-2864 2004

Incoherent charge dynamics of La(2-x)Sr(x)CuO(4): Dynamical localization and resistivity saturation Reviewed

K. Takenaka, J. Nohara, R. Shiozaki, and S. Sugai

Physical Review B Vol. 68 ( 13 ) page： 134501 2003

Ferromagnetic Domain Structure in La(1-x)Sr(x)MnO(3) (x = 0.125) Reviewed

S. Mori, T. Asaka, Y. Horibe, Y. Matsui, R. Shiozaki, K. Takenaka, and S. Sugai

Materials Transactions Vol. 44 ( 12 ) page： 2567-2569 2003

Coherent-to-incoherent crossover in the optical conductivity of La(2-x)Sr(x)CuO(4): Charge dynamics of a bad metal Reviewed

K. Takenaka, R. Shiozaki, S. Okuyama, J. Nohara, A. Osuka, Y. Takayanagi, and S. Sugai

Physical Review B Vol. 65 ( 9 ) page： 092405 2002

Charge dynamics of a double-exchange ferromagnet La(1-x)Sr(x)MnO(3) Reviewed

K. Takenaka, R. Shiozaki, and S. Sugai

Physical Review B Vol. 65 ( 18 ) page： 184436 2002

Impurity effect on charge-ordered and ferromagnetic-metallic state in manganese perovskites: Comparison between Cr and Al doping Reviewed

K. Takenaka, S. Okuyama, R. Shiozaki, T. Fujita, and S. Sugai

Journal of Appleid Physics Vol. 91 ( 5 ) page： 2994 2002

「不良金属」の物理 Reviewed

竹中康司

日本物理学会誌 Vol. 57 ( 11 ) page： 822-825 2002

Optical Reflectivity Spectra Measured on Cleaved Surfaces of Nd(0.5)Sr(0.5)MnO(3) Reviewed

K. Takenaka, S. Okuyama, S. Sugai, and M. Yu. Maksimuk

Journal of the Physical Society of Japan Vol. 71 ( 12 ) page： 3065-3068 2002

Zn-substitution effect on the optical properties of PrBa(2)Cu(4)O(8) Reviewed

K. Takenaka, A. Osuka, S. Sugai, K. Nakada, S. Horii, H. Ikuta, and U. Mizutani

Physica C Vol. 383 ( 3 ) page： 227-231 2002

Al-Substitution Effect on Resistivity in Paramagnetic Phase of La(1-x)Sr(x)CoO(3): Comparison with Magnetoresistive La(1-x)Sr(x)MnO(3) Reviewed

Y. Sawaki, K. Takenaka, and S. Sugai

Journal of the Physical Society of Japan Vol. 70 ( 2 ) page： 602-603 2001

Anisotropic optical spectra of BaCo(1-x)Ni(x)S(2): Effect of Ni substitution on the electronic structure of the Co(1-x)Ni(x)S plane Reviewed

K. Takenaka, S. Kashima, A. Osuka, S. Sugai, Y. Yasui, S. Shamoto, and S. Sato

Physical Review B Vol. 63 ( 11 ) page： 115113 2001

Effect of oxygen annealing on the electrical properties of La(1-x)Sr(x)MnO(3+d) single crystals around the compositional metal-insulator transition Reviewed

R. Shiozaki, K. Takenaka, Y. Sawaki, and S. Sugai

Physical Review B Vol. 63 ( 18 ) page： 184419 2001

Optical Reflectivity Study on Al-Substituted La(0.825)Sr(0.175)MnO(3): Unconventional Localization State Induced by Vacancies in the Ferromagnetic Kondo Lattice Reviewed

K. Takenaka, Y. Sawaki, and S. Sugai

Journal of the Physical Society of Japan Vol. 70 ( 7 ) page： 1896-1899 2001

Electronic structure of the double-exchange ferromagnet La(0.825)Sr(0.175)MnO(3) studied by optical reflectivity Reviewed

K. Takenaka, Y. Sawaki, R. Shiozaki, and S. Sugai

Physical Review B Vol. 62 ( 21 ) page： 13864-13867 2000

Al-substitution effect on charge transport inLa(1-x)Sr(x)MnO(3): Incoherent metallic state in double-exchange ferromagnet Reviewed

Y. Sawaki, K. Takenaka, A. Osuka, R. Shiozaki, and S. Sugai

Physical Review B Vol. 61 ( 17 ) page： 11588-11593 2000

Anisotropic Optical Spectra of PrBa(2)Cu(4)O(8): Possible Tomonaga-Luttinger Liquid Response of the Quasi-One-Dimensional Metallic CuO Double Chains Reviewed

K. Takenaka, N. Nakada, A. Osuka, S. Horii, H. Ikuta, I. Hirabayashi, S. Sugai, and U. Mizutani

Physical Review Letters Vol. 85 ( 25 ) page： 5428-5431 2000

Incoherent-to-coherent crossover of optical spectra inLa(0.825)Sr(0.175)MnO(3): Temperature-dependent reflectivityspectra measured on cleaved surfaces Reviewed

K. Takenaka, Y. Sawaki, and S. Sugai

Physical Review B Vol. 60 ( 18 ) page： 13011-13015 1999

Optical Reflectivity Spectra Measured on Cleaved Surfaces of La(1-x)Sr(x)MnO(3): Evidence Against Extremely Small Drude Weight Reviewed

K. Takenaka, K. Iida, Y. Sawaki, S. Sugai, Y. Moritomo, and A. Nakamura

Journal of the Physical Society of Japan Vol. 68 ( 6 ) page： 1828-1831 1999

In-plane thermal conductivity and Lorenz number inYBa(2)Cu(3)O(7-y) Reviewed

K. Takenaka, Y. Fukuzumi, K. Mizuhashi, S. Uchida, H. Asaoka, and H. Takei

Physical Review B Vol. 56 ( 9 ) page： 5654-5661 1997

Universal Superconductor-Insulator Transition and Tc Depression in High-Tc Cuprates in the Uderdoped Regime Reviewed

Y. Fukuzumi, K. Mizuhashi. K. Takenaka, and S. Uchida

Physical Review Letters Vol. 76 ( 4 ) page： 684-687 1996

Effect on Zn-doping on charge transport in YBa(2)Cu(3)O(7-y) Reviewed

K. Mizuhashi, K. Takenaka, Y. Fukuzumi, and S. Uchida

Physical Review B Vol. 52 ( 6 ) page： R3884-3887 1995

Interplane charge transport in YBa(2)Cu(3)O(7-y):Spin-gap effect on in-plane and out-of-plane resistivity Reviewed

K. Takenaka, K. Mizuhashi, H. Takagi, and S. Uchida

Physical Review B Vol. 50 ( 9 ) page： 6534-6537 1994

Systematic Deviation from T-linear Behavior in the In-PlaneResistivity of YBa(2)Cu(3)O(7-y): Evidence for DominantSpin Scattering Reviewed

T. Ito, K. Takenaka, and S. Uchida

Physical Review Letters Vol. 70 ( 25 ) page： 3995-3998 1993

Electron-density Fourier maps of an untwinned YBa(2)Cu(3)O(6.877) single crystal by x-ray-diffraction data Reviewed

J. D. Sullivan, P. Bordet, M. Marezio, K. Takenaka, and S. Uchida

Physical Review B Vol. 48 ( 14 ) page： 10638-10641 1993

Anisotropic optical spectrum of untwinned PrBa(2)Cu(3)O(7):Persistence of the charge-transfer insulating state ofthe CuO(2) plane against hole doping Reviewed

K. Takenaka, Y. Imanaka, K. Tamasaku, T. Ito, and S. Uchida

Physical Review B Vol. 46 ( 9 ) page： 5833-5836 1992

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