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Rattling-Induced Heavy Fermion State in the Anharmonic Holstein Model
http://hdl.handle.net/10191/26830
http://hdl.handle.net/10191/2683043bc3ea0-4c82-4519-aac2-258117d70bce
名前 / ファイル | ライセンス | アクション |
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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 | Rattling-Induced Heavy Fermion State in the Anharmonic Holstein Model | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Rattling-Induced Heavy Fermion State in the Anharmonic Holstein Model | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | polarons | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | bipolarons | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | bipolaronic transition | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Holstein model | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | rattling | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | anharmonic potential | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | heavy fermion | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Fuse, Takahiro
× Fuse, Takahiro× Ono, Yoshiaki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We investigate the heavy fermion states in the half-filled anharmonic Holstein model by using the dynamical mean-field theory combined with the exact diagonalization method at low temperatures down to 1/10^4 of the conduction bandwidth. For the weak anharmonic cases with single-well or shallow double-well potentials, the bipolaronic first order phase transition takes place at a critical value of the electron-phonon coupling below a critical temperature as recently observed in the harmonic Holstein model. On the other hand, for the strong anharmonic case with deep double-well potential, the bipolaronic transition is suppressed and changes to a crossover where the heavy fermion state with a large effective mass is realized due to the effect of largely anharmonic local oscillations called rattling. | |||||
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. SA136-1-SA136-3, 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.SA136 | |||||
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.SA136 |