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First Order Bipolaronic Transition at Finite Temperature in the Holstein Model
http://hdl.handle.net/10191/26832
http://hdl.handle.net/10191/26832fdab44f6-587f-4c95-b6ec-da0676d80cf3
名前 / ファイル | ライセンス | アクション |
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983.pdf (161.8 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 | First Order Bipolaronic Transition at Finite Temperature in the Holstein Model | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | First Order Bipolaronic Transition at Finite Temperature in the 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 | β-pyrochlore oxide | |||||
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 Holstein model by using the dynamical mean-field theory combined with the exact diagonalization method. Below a critical temperature Tcr, a coexistence of the polaronic and the bipolaronic solutions is found for the same value of the electron-phonon coupling g in the range gc1(T) < g < gc2(T). In the coexistence region, the system shows a first order phase transition from the bipolaronic to the polaronic states as T decreases at T = Tp(< Tcr), where the double occupancy and the lattice fluctuation together with the anharmonicity of the effective ion potential change discontinuously without any symmetry breaking. The obtained bipolaronic transition seems to be consistent with the rattling transition in the β-pyrochlore oxide KOs2O6. | |||||
書誌情報 |
Journal of the Physical Society of Japan en : Journal of the Physical Society of Japan 巻 79, 号 9, p. 093702-1-093702-4, 発行日 2010-09 |
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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/JPSJ.79.093702 | |||||
権利 | ||||||
権利情報 | Copyright (C) 2010 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/JPSJ.79.093702 |