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Dynamical mean-field study of the heavy-fermion state in the multi-orbital Anderson lattice model coupled with Jahn-Teller phonons
http://hdl.handle.net/10191/26906
http://hdl.handle.net/10191/2690676b2bfc0-7090-4c7d-b890-886647c13932
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 | 2014-04-16 | |||||
タイトル | ||||||
タイトル | Dynamical mean-field study of the heavy-fermion state in the multi-orbital Anderson lattice model coupled with Jahn-Teller phonons | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Dynamical mean-field study of the heavy-fermion state in the multi-orbital Anderson lattice model coupled with Jahn-Teller phonons | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Two-orbital Anderson lattice model | |||||
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 | Heavy fermion | |||||
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, K.
× Mitsumoto, K.× Ono, Y. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We investigate the two-orbital Anderson lattice model which includes both the Coulomb interaction between f-electrons and the electron–phonon coupling between f-electrons and Jahn–Teller phonons. The model is solved by using the dynamical mean-field theory in conjunction with the exact diagonalization method. It is found that the heavy fermion state is realized due to the effect of cooperation between the Coulomb interaction and the electron–phonon coupling. Remarkably, the enhancement of lattice fluctuation and the phonon softening observed in the strong coupling regime are largely enhanced due to the Coulomb interaction in contrast to the case with the single-orbital Anderson lattice model. | |||||
書誌情報 |
Physica. B, Condensed matter en : Physica. B, Condensed matter 巻 403, 号 5-9, p. 859-861, 発行日 2008-04 |
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出版者 | ||||||
出版者 | Elsevier | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 09214526 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10673546 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1016/j.physb.2007.10.047 | |||||
著者版フラグ | ||||||
値 | author |