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  1. 050 理学部
  2. 10 学術雑誌論文
  3. 10 査読済論文
  1. 0 資料タイプ別
  2. 01 学術雑誌論文

Heavy Fermions due to Cooperative Effects of Coulomb and Electron-Phonon Interactions in the Two-Orbital Periodic Anderson Model

http://hdl.handle.net/10191/26829
http://hdl.handle.net/10191/26829
3764c2ed-b97e-47c7-8b83-1530fa0f36d2
名前 / ファイル ライセンス アクション
977.pdf 977.pdf (83.4 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2014-04-15
タイトル
タイトル Heavy Fermions due to Cooperative Effects of Coulomb and Electron-Phonon Interactions in the Two-Orbital Periodic Anderson Model
タイトル
言語 en
タイトル Heavy Fermions due to Cooperative Effects of Coulomb and Electron-Phonon Interactions in the Two-Orbital Periodic Anderson Model
言語
言語 eng
キーワード
主題Scheme Other
主題 heavy fermion
キーワード
主題Scheme Other
主題 periodic Anderson model
キーワード
主題Scheme Other
主題 orbital degeneracy
キーワード
主題Scheme Other
主題 Coulomb interaction
キーワード
主題Scheme Other
主題 electron–phonon coupling
キーワード
主題Scheme Other
主題 Jahn–Teller phonon
キーワード
主題Scheme Other
主題 dynamical mean-field theory
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Mitsumoto, Keisuke

× Mitsumoto, Keisuke

WEKO 7112

Mitsumoto, Keisuke

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Ono, Yoshiaki

× Ono, Yoshiaki

WEKO 62

Ono, Yoshiaki

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抄録
内容記述タイプ Abstract
内容記述 Using the dynamical mean-field theory, we investigate the two-orbital periodic Anderson model including both the Coulomb interaction U between f-electrons and the electron–phonon interaction g which couple the local orbital fluctuations of f -electrons with Jahn–Teller phonons. It is found that the heavy fermion state caused by U is largely enhanced due to the effect of g . In the heavy fermion state for large U and g , both the orbital and lattice fluctuations are enhanced, while the charge (valence) and spin fluctuations are suppressed; this is a nonmagnetic origin of the heavy fermions. The effect of the mass enhancement for the case with twofold-degenerate phonon mode is larger than that for one phonon mode. The obtained results show a possible nonmagnetic origin of the heavy fermion state recently observed in SmOs4Sb12.
内容記述
内容記述タイプ Other
内容記述 Proceedings of the International Conference on Heavy Electrons 2010 (ICHE2010)
書誌情報 Journal of the Physical Society of Japan
en : Journal of the Physical Society of Japan

巻 80, 号 Supplement A, p. SA138-1-SA138-3, 発行日 2011-07
出版者
出版者 日本物理学会
ISSN
収録物識別子タイプ ISSN
収録物識別子 00319015
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA00704814
DOI
識別子タイプ DOI
関連識別子 info:doi/10.1143/JPSJS.80SA.SA138
権利
権利情報 Copyright (C) 2011 The Physical Society of Japan
著者版フラグ
値 author
異版である
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://journals.jps.jp/doi/abs/10.1143/JPSJS.80SA.SA138
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