Odd-parity multipole order and unusual ordering in Kondo semiconductor
Project/Area Number |
17K05546
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Condensed matter physics II
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Research Institution | Toyama Prefectural University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
西岡 孝 高知大学, 教育研究部自然科学系理工学部門, 教授 (10218117)
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Project Period (FY) |
2017-04-01 – 2020-03-31
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Project Status |
Completed (Fiscal Year 2019)
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Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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Keywords | 強相関電子系 |
Outline of Final Research Achievements |
Unusual antiferromagnetic (AFM) Kondo semiconductor CeT2Al10 system (T=Fe,Ru,Os) were investigated for pressure effect and substitution effect. We obtained information on the relation between the hybridization gap typical for the Kondo semiconductor and the unusual AFM order. The origin of the magnetic excitation found at the early stage of this study remains unsolved, but progress has been obtained by neutron experiments. Metallic antiferromagnet CeCoSi without local space inversion symmetry was also examined from an "odd-parity" multipole ordering point of view. We succeeded in synthsizing single crystals of CeCoSi for the first time, and proposed the possibility of "odd-parity" multipole order.
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Academic Significance and Societal Importance of the Research Achievements |
近藤半導体で磁気秩序を示す化合物はまず存在しないと考えられるが、予想に反し、「セリウム―遷移金属-アルミニウム」化合物は、異常に高い温度で磁気秩序を示す。本研究成果により、新しい磁気材料、半導体材料、などの開発に繋がる可能性がある。 「セリウム―遷移金属―シリサイド」については、初めて単結晶合成に成功し、非従来型の秩序相である「奇パリティ多極子秩序相」における研究のスタート地点を築いた。
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Report
(4 results)
Research Products
(51 results)
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[Journal Article] Magnetic Properties in Tetragonal Antiferromagnet CeCoSi2020
Author(s)
H. Tanida, K. Mitsumoto, Y. Muro, T. Fukuhara, Y. Kawamura, A. Kondo, K. Kindo, Y. Matsumoto, T. Namiki, T. Kuwai, and T. Matsumura
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Journal Title
JPS Conference Proceedings
Volume: 30
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Successive Phase Transition at Ambient Pressure in CeCoSi: Single Crystal Studies2019
Author(s)
H. Tanida, K. Mitsumoto, Y. Muro, T. Fukuhara, Y. Kawamura, A. Kondo, K. Kindo, Y. Matsumoto, T. Namiki, T. Kuwai, and T. Matsumura
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Journal Title
Journal of Physical Society of Japan
Volume: 88
Issue: 5
Pages: 1-10
DOI
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Elastic softening due to the quadrupole interaction and anomalous magnetic phase diagram under the magnetic field in HoRu2Al102017
Author(s)
S. Kamikawa, I. Ishii, K. Takezawa, T. Mizuno, T. Sakami, F. Nakagawa, H. Tanida, M. Sera, T. Suzuki, K. Mitsumoto, X. Xi
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Journal Title
Physical Review B
Volume: 96
Issue: 15
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] X-Ray Diffraction Study of CeT2Al10 (T= Ru, Os) at Low Temperatures and under Pressures2017
Author(s)
Y. Kawamura, J. Hayashi, K. Takeda, C. Sekine, H. Tanida, M. Sera, S. Nakano, T. Tomita, H. Takahashi, T. Nishioka
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Journal Title
Acta Physica Polonica
Volume: 131
Issue: 4
Pages: 988-990
DOI
Related Report
Peer Reviewed
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[Presentation] 希土類元素を含むディラック電子系の放射光ARPES2019
Author(s)
吉川智己, 北山悠斗, Wang Xiaoxiao, 岩澤英明, 鹿子木将明, 河野嵩, 尾田拓之慎, 小澤秀介, Shiv KumarA, Eike Schwier, 島田賢也, 室隆桂之, 谷田博司, 木村昭夫
Organizer
日本物理学会2019年秋季大会
Related Report
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[Presentation] CeRu2Al10における電流誘起磁化とその解釈2019
Author(s)
高力暁成, 山本将隆, 鹿内奈南, 齋藤開, 田端千紘, 日高宏之, 柳澤達也, 網塚浩, 谷田博司, 松村武, 世良正文
Organizer
日本物理学会2019年秋季大会
Related Report
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[Presentation] Current-Induced Magnetization of CeRu2Al102019
Author(s)
Akinari Koriki, Masataka Yamamoto, Nana Shikanai, Hiraku Saito, Chihiro Tabata, Hiroyuki Hidaka, Tatsuya Yanagisawa, Hiroshi Tanida, Takeshi Matsumura, Masafumi Sera, Hiroshi Amitsuka
Organizer
SCES2019(Okayama)
Related Report
Int'l Joint Research / Invited
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[Presentation] Magnetic Properties in Tetragonal Antiferromagnet CeCoSi2019
Author(s)
Hiroshi Tanida, Keisuke Mitsumoto, Yuji Muro, Tadashi Fukuhara, Yukihiro Kawamura, Akihiro Kondo, Koichi Kindo, Yuji Matsumoto, Takahiro Namiki, Tomohiko Kuwai, Takeshi Matsumura
Organizer
SCES2019(Okayama)
Related Report
Int'l Joint Research
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[Presentation] CeRu2Al10における電流誘起磁化2019
Author(s)
高力暁成, 山本将隆, 鹿内奈南, 齋藤開, 田端千紘, 日高宏之, 柳澤達也, 網塚浩, 谷田博司, 松村武, 世良正文
Organizer
日本物理学会第74回年次大会(2019年)
Related Report
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[Presentation] パルスマグネットを用いた近藤半導体CeT2Al10(T=Ru, Os, Fe)の圧力下磁気抵抗 II2018
Author(s)
近藤晃弘, 金道浩一, 中川史也, 片岡真一, 谷田博司, 世良正文, 川端丈, 高畠敏郎, 西岡孝
Organizer
日本物理学会2017年秋季大会
Related Report
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