Investigation of spin glass quantum critical material and its quantum critical phenomena
Project/Area Number |
26400347
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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 | Tohoku University |
Principal Investigator |
Li Dexin 東北大学, 金属材料研究所, 助教 (40281985)
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Co-Investigator(Kenkyū-buntansha) |
本間 佳哉 東北大学, 金属材料研究所, 助教 (00260448)
山村 朝雄 東北大学, 金属材料研究所, 准教授 (20281983)
青木 大 東北大学, 金属材料研究所, 教授 (30359541)
本多 史憲 東北大学, 金属材料研究所, 准教授 (90391268)
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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 |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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Keywords | スピングラス / 量子臨界状態 / フラストレーション効果 / f電子系化合物 / 量子臨海状態 / f電子系化合物 |
Outline of Final Research Achievements |
Evident effects of element composition and external magnetic field on the spin glass behavior are observed for many ternary uranium and rare earth compounds. In particular, spin glass system U2Pd1+xSi3-x polycrystals and Ce2CuSi3 single crystal are synthesized and their basic physical properties are measured down to 1.8 K. As a result, the spin glass transition temperature of U2Pd1+xSi3-x decreases as the Si content increases. The optimum Si content that is highly likely to achieve a quantum critical state for U2Pd1+xSi3-x is found. On the other hand, it is confirmed that the spin glass characteristics of Ce2CuSi3 is changed by the external magnetic field. The spin glass transition temperature of Ce2CuSi3 moves toward the low temperature side as the external magnetic field increases, and there is a large possibility to achieve a quantum critical state near 1.4 kOe.
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Report
(4 results)
Research Products
(46 results)
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[Journal Article] Single crystal growth and magnetic properties of RCu9Sn4 (R:rare earth metals)2015
Author(s)
Yusuke Hirose, Shun Tomaru, Shoko Sato, Shunpei Ota, Shuhei Kurahashi, Tetsuya, Takeuchi, Fuminori Honda, Yoshiya Homma, Dexin Li, Dai Aoki, Rikio Settai
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Journal Title
J. Phys.: Conf. Sec.
Volume: 592
Pages: 0120341-6
DOI
Related Report
Peer Reviewed
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[Presentation] 単結晶Ce2T3Ge5 (T=Ir, Co, Pd)の物性と圧力効果2017
Author(s)
中村優希, 中島美帆, 天児寧, 仲村愛, 李徳新, 本多史憲, 青木大, 郷地順, 上床美也
Organizer
日本物理学会第72回年次大会
Place of Presentation
大阪大学
Year and Date
2017-03-17
Related Report
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[Presentation] UIrSi3の単結晶育成と物性2017
Author(s)
本多史憲, Valenta Jaroslav, Valiska Michal, Bara Vondrackova, Petr Opletal, Jiri Kastil, Prchal Jiri, 李徳新, 青木大, Sechovsky Vladimir
Organizer
日本物理学会第72回年次大会
Place of Presentation
大阪大学
Year and Date
2017-03-17
Related Report
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[Presentation] Single Crystal Growth and Superconductivity in Th7Ni3 and La7Ni3 without Inversion Symmetry2016
Author(s)
A. Nakamura, F. Honda, Y. Homma, D. X. Li, D. Aoki, K. Nishimura, M. Kakihana, M. Hedo, T. Nakama, and Y. Onuki
Organizer
International Conference on Strongly Correlated Electron Systems
Place of Presentation
Hangzhou, China
Year and Date
2016-05-08
Related Report
Int'l Joint Research
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[Presentation] Pressure effect of EuCu9Sn4 and EuZn132015
Author(s)
Takeuchi, Fuminori Honda, Dexin Li, Dai Aoki, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Yoshinori Haga, Rikio Settai
Organizer
20th International Conference on Magnetism
Place of Presentation
Barcelona, Spain
Year and Date
2015-07-05
Related Report
Int'l Joint Research
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[Presentation] Single crystal growth and electronic state of RT2X202014
Author(s)
Y. Hirose, S. Tomaru, H. Doto, S. Ota, F. Honda, D. X. Li, Y. Homma, D. Aoki and R. Settai
Organizer
International Symposium on Utilization of Research Reactors for Material Studies
Place of Presentation
Sendai, Institute for Materials Research
Year and Date
2014-12-11 – 2014-12-12
Related Report
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