2001年10月
Critical behaviour near the Mott metal-insulator transition in a two-band Hubbard model
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
- ,
- 巻
- 70
- 号
- 10
- 開始ページ
- 2989
- 終了ページ
- 2998
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1143/JPSJ.70.2989
- 出版者・発行元
- PHYSICAL SOC JAPAN
The Mott metal insulator transition in the two-band Hubbard model in infinite dimensions is studied by using the linearized dynamical mean-field theory. The discontinuity in the chemical potential for the change from hole to electron doping is calculated analytically as a function of the on-site Coulomb interaction U at the d-orbital and the charge-transfer energy Delta between the d-and p-orbitals. Critical behaviour of the quasiparticle weight is also obtained analytically as a function of U and Delta. The analytic results are in good agreement with the numerical results of the exact diagonalization method.
- リンク情報
- ID情報
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- DOI : 10.1143/JPSJ.70.2989
- ISSN : 0031-9015
- Web of Science ID : WOS:000171704500037