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Phonon softening and double-well potential formation due to electron-phone interaction in heavy-fermion systems
http://hdl.handle.net/10191/1152
http://hdl.handle.net/10191/1152f92a329b-f3fc-45aa-a754-f23556e3bf03
名前 / ファイル | ライセンス | アクション |
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19_0004.pdf (204.0 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2007-04-23 | |||||
タイトル | ||||||
タイトル | Phonon softening and double-well potential formation due to electron-phone interaction in heavy-fermion systems | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Phonon softening and double-well potential formation due to electron-phone interaction in heavy-fermion systems | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Electron-phonon interaction | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Heavy-fermion | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Superconductivity | |||||
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× Ono, Yoshiaki |
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著者別名 | ||||||
識別子 | 62 | |||||
識別子Scheme | WEKO | |||||
姓名 | 大野, 義章 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We investigate the periodic Anderson-Holstein model by using the dynamical mean-field theory combined with the exact diagonalization method. For the strong electron-phonon coupling g≳gc, the system shows an anomalous heavy-fermion behaviour which is accompanied by a large lattice fluctuation and an extreme phonon softening. We also calculate an effective potential for the ions and find that a simple harmonic potential for g≲gc changes into a double-well potential for g≳gc. The effective pairing interaction between the conduction electrons shows a maximum at g≈gc where the superconducting transition temperature is expected to be maximum. | |||||
書誌情報 |
Physica. C, Superconductivity en : Physica. C, Superconductivity 巻 426-431, p. 330-334, 発行日 2005-10 |
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出版者 | ||||||
出版者 | Elsevier B.V. | |||||
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収録物識別子タイプ | ISSN | |||||
収録物識別子 | 09214534 | |||||
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収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11461984 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1016/j.physc.2004.12.021 | |||||
権利 | ||||||
権利情報 | Elsevier B.V. | |||||
著者版フラグ | ||||||
値 | author |