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Mott transition in correlated electron systems with orbital degree of freedom
http://hdl.handle.net/10191/1147
http://hdl.handle.net/10191/1147677a5392-0d31-4aae-b47f-ee2da79661d8
名前 / ファイル | ライセンス | アクション |
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19_0007.pdf (236.3 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 | Mott transition in correlated electron systems with orbital degree of freedom | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Mott transition in correlated electron systems with orbital degree of freedom | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Ono, Yoshiaki
× Ono, Yoshiaki× Ralf, Bulla× Michael, Potthoff |
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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 | Mott metal-insulator transitions in an M-fold orbitally degenerate Hubbard model are studied by means of a generalization of the linearized dynamical mean-field theory. The method allows for an efficient and reliable determination of the critical interaction Uc for any integer filling n and different M at zero temperature. For half-filling a linear dependence of Uc on M is found. Inclusion of the (full) Hund's rule exchange J results in a strong reduction of Uc. The transition turns out to change qualitatively from continuous for J=0 to discontinuous for any finite J. This result is confirmed using the exact-diagonalization method for M=2. | |||||
書誌情報 |
Physical Review B en : Physical Review B 巻 67, p. 035119-1-035119-6, 発行日 2003 |
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出版者 | ||||||
出版者 | American Physical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 10980121 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11187113 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1103/PhysRevB.67.035119 | |||||
権利 | ||||||
権利情報 | The American Physical Society | |||||
著者版フラグ | ||||||
値 | author |