Experimental studies of ferromagnetic superconductivity and valence fluctuation effect under high pressure
| Project/Area Number |
20340090
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Okayama University |
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Principal Investigator |
KOBAYASHI Tatsuo Okayama University, 大学院・自然科学研究科, 教授 (80205468)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2010: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2009: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2008: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
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| Keywords | 超伝導 / 強磁性 / 価数転移 / 高圧実験 |
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| Research Abstract |
The existence of two structural phase transitions is discovered in a ferromagnet UIr. The ferromagnetic critical point and the superconductivity belong to the high-pressure phase III. Phase III is unstable at low temperatures, which may causes the small Meissner effect. In CeCu_2Si_2, the anomalous Hall effect is observed in the pressure region of enhanced T_c, which may be attributed to the charge fluctuation due to the valence transition of Ce ions and then may be related to the enhancement of T_c.
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Report
(4 results)
Research Products
(71 results)
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[Journal Article] Anomalous Kondo effect and ordered state in heavy fermion system SmOs_4Sb_<12> : Resistivity, Sb-NQR, and magnetization measurements under high pressure2008
Author(s)
H.Kotegawa, K.Tabira, Y.Irie, H.Hidaka, T.C.Kobayashi, D.Kikuchi, K.Tanaka, S.Tatsuoka, H.Sugawara, H.Sato
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Journal Title
J.Phys.Soc.Jpn.Suppl.A 77
Pages: 90-95
Related Report
Peer Reviewed
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[Presentation] U_3P_4の圧力誘起強磁性・非磁性転移2010
Author(s)
荒木新吾, 真鍋博紀, 小林達生, 稲田佳彦, 村田恵三, P.Wisniewski, 青木大, 大貫惇睦, 山本悦嗣, 芳賀芳範, 藤原賢二
Organizer
日本物理学会第65回年次大会
Place of Presentation
岡山大学
Related Report
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