| Project/Area Number |
21540368
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Niigata University (2010-2011)
Kanagawa University (2009) |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 強相関電子系 / f電子 / 多極子 / 磁性 / 結晶場 / 磁場 / 金属絶縁体転移 / 超伝導 / 希土類化合物 / f電子系 / cf混成 / 重荷秩序 / スクッテルダイト / 電子系 / 伝導電子 / 核スピン / 微細相互作用 / 磁気抵抗 / バンド構造 / PrRu_4P_<12> / 電荷秩序 / 動的平均場理論 / 輸送現象 |
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| Research Abstract |
In this project, we have done theoretical studies on unconventional ordering and fluctuation of local multipoles and conduction-electron states in rare-earth compounds. It was shown particularly that the nature of the charge order and the transport properties of conduction electrons in P_rR-u_4P_<12> are explained unifiedly by the pf hybridization model. Then, it was also unveiled that rich variety of ordering phenomena in other skutterudites such as the quadrupolar effect in the superconductor P_rO_s_4Sb_<12> and a complex magnetism in P_rF_e_4A_s_<12> are derived from an interplay of the pf and df hybridizations.
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