論文 - 辺土　正人

Quantum criticality of valence transition for the unique electronic state of antiferromagnetic compound EuCu₂Ge₂

J. Gouchi, K. Miyake, W. Iha, M. Hedo, T. Nakama, Y. Ōnuki, Y. Uwatoko

Journal of the Physical Society of Japan ( Journal of the Physical Society of Japan )  89 ( 5 ) 053703 - 053703   2020年05月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Quasi-one-dimensional magnetic interactions and conduction electrons in EuCu₅ and EuAu₅ with the characteristic hexagonal structure

S. Matsuda, J. Ota, K. Nakaima, W. Iha, J. Gouchi, Y. Uwatoko, M. Nakashima, Y. Amako, F. Honda, D. Aoki, A. Nakamura, T. Takeuchi, Y. Haga, H. Harima, M. Hedo, T. Nakama, Y. Ōnuki

Philosophical Magazine ( Philosophical Magazine )  100   1244 - 1257   2020年04月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Electronic Structure of Trivalent Compound EuPd₃ Studied by Soft X-ray Angle-resolved Photoemission Spectroscopy

Kawasaki Ikuto, Kobata Masaaki, Fujimori Shin-ichi, Takeda Yukiharu, Yamagami Hiroshi, Nakamura Ai, Iha Wataru, Hedo Masato, Nakama Takao, Ōnuki Yoshichika

Journal of the Physical Society of Japan ( Physical Society of Japan )  89 ( 4 ) 44704 - 44704   2020年04月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

　概要を見る

EuPd3 is a rare Eu-based compound, whose Eu ions are in a trivalent state. The electronic structure of EuPd3 was investigated by angle-resolved photoemission spectroscopy (ARPES) using soft x rays. Eu3+ components arising from the 4f(5) final state multiplet were clearly observed in the valence spectra, and no Eu2+ components were observed within experimental accuracy, confirming a robust Eu3+ state. The band structure and Fermi surfaces revealed by the ARPES measurements were compared to band structure calculations based on the density-functional theory for LaPd3 and YPd3. We found that the calculation for LaPd3 provides a better description for our ARPES results. The effective electron masses estimated from the ARPES spectra near the Fermi level are in good agreement with the corresponding cyclotron effective masses in previous de Haas-van Alphen experiments.

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Electronic Structure of the Valence Transition System Eu(Rh_1−xT_x)₂Si₂ (T = Co, Ir) Studied by High-Energy Resolution Fluorescence Detection X-Ray Absorption Spectroscopy

Ryohei Shimokasa, Naomi Kawamura, Taku Kawabata, Gen Isumi, Takayuki Uozumi, Akihiro Mitsuda, Hirofumi Wada, Fuminori Honda, Masato Hedo, Takao Nakama, Yoshichika Ōnuki, Masaichiro Mizumaki, Kojiro Mimura

JPS Conference Proceedings ( Physical Society of Japan )  30   011134   2020年03月 [ 査読有り ]

掲載種別: 研究論文（国際会議プロシーディングス）

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Unique Skyrmion Phases and Conduction Electrons in Cubic Chiral Antiferromagnet EuPtSi and Related Compounds

Yoshichika {\={O } }nuki, Masashi Kakihana, Wataru Iha, Kenri Nakaima, Dai Aoki, Ai Nakamura, Fuminori Honda, Miho Nakashima, Yasushi Amako, Jun Gouchi, Yoshiya Uwatoko, Shota Nakamura, Toshiro Sakakibara, Tetsuya Takeuchi, Yoshinori Haga, Hiroaki Ikeda, Hisatomo Harima, Masato Hedo, Takao Nakama

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019) ( Journal of the Physical Society of Japan )    2020年03月 [ 査読有り ]

掲載種別: 研究論文（国際会議プロシーディングス）

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Single Crystal Growth and Electronic Properties of Mn₂P and Fe₂P

Jouji Ota, Masashi Kakihana, Kenri Nakaima, Shinya Matsuda, Takanori Kida, Masayuki Hagiwara, Miho Nakashima, Yasushi Amako, Dai Aoki, Ai Nakamura, Fuminori Honda, Yoshinori Haga, Hisatomo Harima, Masato Hedo, Takao Nakama, Yoshichika Ōnuki

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019) ( Journal of the Physical Society of Japan )    2020年03月 [ 査読有り ]

掲載種別: 研究論文（国際会議プロシーディングス）

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Spin Glass Behavior in EuCu₂Si₂ Single Crystal Grown by the Flux Method

Takeuchi Tetsuya, Haga Yoshinori, Taniguchi Toshifumi, Iha Wataru, Ashitomi Yousuke, Yara Tomoyuki, Kida Takanori, Tahara Time, Hagiwara Masayuki, Nakashima Miho, Amako Yasushi, Hedo Masato, Nakama Takao, Ōnuki Yoshichika

Journal of the Physical Society of Japan ( Physical Society of Japan )  89 ( 3 ) 34705 - 34705   2020年03月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

Anisotropic Magnetic Phase Diagrams in EuRh₂Si₂

Tetsuya Takeuchi, Wataru Iha, Masashi Kakihana, Yousuke Ashitomi, Takanori Kida, Time Tahara, Masayuki Hagiwara, Yoshinori Haga, Masato Hedo, Takao Nakama, Yoshichika Ōnuki

JPS Conference Proceedings ( Physical Society of Japan )  29   012005   2020年02月 [ 査読有り ]

掲載種別: 研究論文（国際会議プロシーディングス）

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Single Crystal Growth and Unique Electronic States of Cubic Chiral EuPtSi and Related Compounds

Yoshichika Ōnuki, Masashi Kakihana, Wataru Iha, Kenri Nakaima, Dai Aoki, Ai Nakamura, Fuminori Honda, Miho Nakashima, Yasushi Amako, Jun Gouchi, Yoshiya Uwatoko, Shota Nakamura, Toshiro Sakakibara, Tetsuya Takeuchi, Yoshinori Haga, Hiroaki Ikeda, Hisatomo Harima, Masato Hedo, Takao Nakama

JPS Conference Proceedings ( Physical Society of Japan )  29   012001   2020年02月 [ 査読有り ]

掲載種別: 研究論文（国際会議プロシーディングス）

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Single Crystal Growth and Magnetic Properties of Antiferromagnets EuGe and EuGe₂

Shinya Matsuda, Wataru Iha, Fuminori Honda, Jun Gouchi, Yoshiya Uwatoko, Miho Nakashima, Yasushi Amako, Tetsuya Takeuchi, Takanori Kida, Masayuki Hagiwara, Masato Hedo, Takao Nakama, Yoshichika Ōnuki

JPS Conference Proceedings ( Physical Society of Japan )  29   012003   2020年02月 [ 査読有り ]

掲載種別: 研究論文（国際会議プロシーディングス）

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De Haas–van Alphen Effect and Fermi Surface Properties of Antiferromagnet EuSnP

Wataru Iha, Shinya Matsuda, Fuminori Honda, Tetsuya Takeuchi, Jun Gouchi, Yoshiya Uwatoko, Hisatomo Harima, Masato Hedo, Takao Nakama, Yoshichika Ōnuki

JPS Conference Proceedings ( Physical Society of Japan )  29   012002   2020年02月 [ 査読有り ]

掲載種別: 研究論文（国際会議プロシーディングス）

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¹⁵³Eu Zero-field NMR Study of Antiferromagnetic State in EuAl₄

Haruo Niki, Saori Nakamura, Nonoka Higa, Mamoru Yogi, Ai Nakamura, Kaori Niki, Takahiro Maehira, Masato Hedo, Takao Nakama, Yoshichika Ōnuki

Proceedings of J-Physics 2019: International Conference on Multipole Physics and Related Phenomena ( Journal of the Physical Society of Japan )    2020年02月 [ 査読有り ]

掲載種別: 研究論文（国際会議プロシーディングス）

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Fermi Surfaces and Magnetoresistance of Dirac Conduction Electrons in PbX (X: S, Se, Te) and AMnBi2 (A=Ca, Sr)

Kenri Nakaima, Shinya Matsuda, Wataru Iha, Shoya Kawakatsu, Masashi Kakihana, Takanori Kida, Masayuki Hagiwara, Tetsuya Takeuchi, Dai Aoki, Ai Nakamura, Jun Gouchi, Yoshiya Uwatoko, Masato Hedo, Takao Nakama, Yoshichika Ōnuki

Proceedings of J-Physics 2019: International Conference on Multipole Physics and Related Phenomena ( Journal of the Physical Society of Japan )  29   013005-1 - 013005-7   2020年02月 [ 査読有り ]

掲載種別: 研究論文（国際会議プロシーディングス）

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Electronic States of Sn4P3: Analogue of Topological Insulator Bi2Se3

Kenri Nakaima, Shoya Kawakatsu, Masashi Kakihana, Dai Aoki, Ai Nakamura, Fuminori Honda, Hisatomo Harima, Masato Hedo, Takao Nakama, Yoshichika Onuki

Proceedings of J-Physics 2019: International Conference on Multipole Physics and Related Phenomena ( Journal of the Physical Society of Japan )    2020年02月 [ 査読有り ]

掲載種別: 研究論文（国際会議プロシーディングス）

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Magnetic Field Induced Triple-q Magnetic Order in Trillium Lattice Antiferromagnet EuPtSi Studied by Resonant X-ray Scattering

Tabata Chihiro, Matsumura Takeshi, Nakao Hironori, Michimura Shinji, Kakihana Masashi, Inami Toshiya, Kaneko Koji, Hedo Masato, Nakama Takao, Ōnuki Yoshichika

Journal of the Physical Society of Japan ( Physical Society of Japan )  88 ( 9 ) 093704 - 093704   2019年08月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

Unique Magnetic Phases in the Skyrmion Lattice and Fermi Surface Properties in Cubic Chiral Antiferromagnet EuPtSi

Kakihana Masashi, Aoki Dai, Nakamura Ai, Honda Fuminori, Nakashima Miho, Amako Yasushi, Takeuchi Tetsuya, Harima Hisatomo, Hedo Masato, Nakama Takao, Ōnuki Yoshichika

Journal of the Physical Society of Japan ( Physical Society of Japan )  88 ( 9 ) 094705 - 094705   2019年08月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Magnetic Fluctuation and First-Order Transition in Trillium Lattice of EuPtSi Observed by ¹⁵¹Eu Mössbauer Spectroscopy

Y. Homma, M. Kakihana, Y. Tokunaga, M. Yogi, M. Nakashima, A. Nakamura, Y. Shimizu, D. X. Li, A. Maurya, Y. J. Sato, F. Honda, D. Aoki, Y. Amako, M. Hedo, T. Nakama, Y. Ōnuki

Journal of the Physical Society of Japan ( Physical Society of Japan )  88 ( 9 ) 094702 - 094702   2019年08月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Fluctuation-Induced First-Order Transition and Tricritical Point in EuPtSi

Sakakibara Toshiro, Nakamura Shota, Kittaka Shunichiro, Kakihana Masashi, Hedo Masato, Nakama Takao, Ōnuki Yoshichika

Journal of the Physical Society of Japan ( Physical Society of Japan )  88 ( 9 ) 093701 - 093701   2019年07月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Electronic states of EuCu₂Ge₂ and EuCu₂Si₂ studied by soft X-ray photoemission spectroscopy

I. Kawasaki, S. Fujimori, Y. Takeda, H. Yamagami, W. Iha, M. Hedo, T. Nakama, Y. Onuki

Physical Review B ( Physical Review B )  100 ( 3 ) 035111 - 035111   2019年07月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Linear magnetoresistance in the low-field limit in density-wave materials.

Feng Y, Wang Y, Silevitch DM, Yan JQ, Kobayashi R, Hedo M, Nakama T, Ōnuki Y, Suslov AV, Mihaila B, Littlewood PB, Rosenbaum TF

Proceedings of the National Academy of Sciences of the United States of America ( Proceedings of the National Academy of Sciences of the United States of America )  116 ( 23 ) 11201 - 11206   2019年06月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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