Research on unusual antiferromagnetic order in Kondo semiconductor and exploring of novel ordered phase in low-symmetry structure
Project/Area Number |
26800188
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Condensed matter physics II
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Research Institution | Hiroshima University |
Principal Investigator |
Tanida Hiroshi 広島大学, 先端物質科学研究科, 助教 (00452615)
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Project Period (FY) |
2014-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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Keywords | 強相関電子系 / 近藤半導体 / 反強磁性秩序 / 圧力効果 / 新奇秩序 / 磁性 |
Outline of Final Research Achievements |
Due to the strong hybridization effect between conduction electrons and Ce-4f electrons, there are no examples exhibiting magnetic order in Kondo insulators/semiconductors. However, CeRu2Al10 and related CeOs2Al10 shows an unusual antiferromagnetic order at enormously high transition temperature of T0=30 K. In order to clarify the origin of the magnetic ordering, we have examined the electrical resistivity under pressures using a high pressure cell. From the results, we found that the critical pressure of the disappearance of the magnetic order is about 5 GPa, even in the related Rh-doped samples as well. We also examined low temperature properties of HoFe2Al10, and revealed that a new ordered phase, which could be strongly related to the multipole degrees of freedom, is induced by the magnetic field.
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Report
(4 results)
Research Products
(62 results)
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[Journal Article] Influence of Electron Doping on Magnetic Order in CeRu2Al102014
Author(s)
R. Kobayashi, K. Kaneko, K. Saito, J. Mignot, G. Andre, J. Robert, S. Wakimoto, M. Matsuda, S. Chi, Y. Haga, and T. D. Matsuda
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Journal Title
J. Phys. Soc. Jpn.
Volume: 83
Issue: 10
Pages: 1047071-5
DOI
NAID
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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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2017
Author(s)
近藤晃弘, 金道浩一, 山本昇由A, 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 第72回年次大会(2017年)
Place of Presentation
大阪大学 豊中キャンパス
Year and Date
2017-03-17
Related Report
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[Presentation] CeRu2Al10のRh置換によるインタラクションクロスオーバー2017
Author(s)
小林理気, 谷田博司, 世良正文, Matthias D. Frontze, 左右田稔, 益田隆嗣, 吉澤英樹, 阿曽尚文, 金子耕士, 脇本秀一, 郷地順, 上床美也, 氷上忍
Organizer
日本物理学会 第72回年次大会(2017年)
Place of Presentation
大阪大学 豊中キャンパス
Year and Date
2017-03-17
Related Report
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[Presentation] 中性子回折実験によるCeRu2Al10のRh置換誘起相の研究2016
Author(s)
小林理気, 谷田博司, 世良正文, Matthias D. Frontzek, 左右田稔, 益田隆嗣, 吉澤英樹, 阿曽尚文, 金子耕士, 脇本秀一, 上床美也, 氷上忍
Organizer
日本物理学会 2016年秋季大会
Place of Presentation
金沢大学角間キャンパス
Year and Date
2016-09-13
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[Presentation] HoRu2Al10の磁場中弾性率2016
Author(s)
上川修平, 石井勲, 後藤弘季, 中川史也, 谷田博司,世良正文,鈴木孝至
Organizer
日本物理学会第71回年次大会(2016年
Place of Presentation
東北学院大学(宮城県,仙台市)
Year and Date
2016-03-19
Related Report
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[Presentation] Double-k commensurate magnetic order in NdFe2Al102015
Author(s)
J. Robert, F. Damay, K. Saito, A.M. Bataille, F. Porcher, G. André, A. Gukasov, J.M.-Mignot, H. Tanida, M. Sera
Organizer
ICM2015
Place of Presentation
Barcelona, Spain
Year and Date
2015-07-05
Related Report
Int'l Joint Research
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[Presentation] Elastic softening in HoFe2Al102015
Author(s)
S. Kamikawa, I. Ishii, H. Goto, T. Fujita, F. Nakagawa, H. Tanida, M. Sera, T.Suzuki
Organizer
ICM2015
Place of Presentation
Barcelona, Spain
Year and Date
2015-07-05
Related Report
Int'l Joint Research
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[Presentation] Collapse of anisotropic hybridization gap in Kondo semiconductor CeT2Al10 (T=Fe, Ru) by substitution, pressure, and magnetic field2014
Author(s)
Hiroshi Tanida, Michio Nakamura, Masafumi Sera, Akihiro Kondo, Koichi Kindo, Takashi Nishioka, Masahiro Matsumura
Organizer
International Conference on Strongly Correlated Electron Systems (SCES2014)
Place of Presentation
UNIVERSITY CAMPUS SAINT MARTIN D'HERES, Grenoble, France
Year and Date
2014-07-07 – 2014-07-11
Related Report