2011 Fiscal Year Final Research Report
Higher-multipole transitions and disorder effects in f-electron systems
| Project/Area Number |
20340084
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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 | Tohoku University |
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Principal Investigator |
KURAMOTO Yoshio 東北大学, 大学院・理学研究科, 教授 (70111250)
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| Project Period (FY) |
2008 – 2011
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| Keywords | 多極子 / 八極子 / 近藤効果 / 量子モンテカルロ / スカラー秩序 / 結晶場 |
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| Research Abstract |
This study dealt with ordered states of both the Kondo lattice for Ce based heavy-electron systems, and non-Kramers Kondo lattice models for Pr and U based systems. Using the continuous-time Monte Carlo method, we have clarified the followings :(1)Characteristic change of the Fermi surface and lifetime of electrons upon La doping in Ce-based systems ; (2)Microscopic origin of the scalar order in PrFe4P12 with competing Kondo crystalline electric field effects ;(3)Possible itinerant octupole order in the two-channel non-Kramers Kondo lattice.
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