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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/10191/268293764c2ed-b97e-47c7-8b83-1530fa0f36d2
| 名前 / ファイル | ライセンス | アクション |
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977.pdf (83.4 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 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 | ||||||
| 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 | en | |||||
| 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 | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 著者 |
Mitsumoto, Keisuke
× Mitsumoto, Keisuke× 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 |
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| 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 | |||||
