| Project/Area Number |
21540364
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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 | Hiroshima University |
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Principal Investigator |
SERA Masafumi 広島大学, 大学院・先端物質科学研究科, 教授 (40196978)
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| Co-Investigator(Kenkyū-buntansha) |
TANIDA Hiroshi 広島大学, 大学院・先端物質科学研究科, 助教 (00452615)
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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 |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 多極子秩序 / 隠れた秩序 / 近藤効果 / 結晶場 / 一重項基底状態 / 近藤半導体 / 磁気秩序 / スピンギャップ / c-f混成 / フェルミ面 / 磁気異方性 / 多重極秩序 |
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| Research Abstract |
As for CeB_6 system showing a multipole order, we succeeded to observe the order parameters of O_<xy> and Txyz directly by the resonant X-ray scattering. By the study of the pressure effect on phase IV of Ce_<0. 8> La_<0. 2> B_6, we found that the results were difficult to understand by the octupole order proposed previously. As for CeT_2Al_<10>, we found that the origin of the order is magnetic, the spin singlet is closely associated with the long range order in this system, the electronic state has a two-dimensional nature and the anisotropic c-f hybridization plays an important role in the unusual long range order.
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