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Metal-Insulator Transition in a Generalized Hubbard Model with Correlated Hopping at Half-Filling | | Leonid Didukh
; Vasyl Hankevych
; | | Date: |
16 Nov 1998 | | Journal: | phys. stat. sol. (b), vol. 211, no. 2, p. 703 (1999) | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Affiliation: | Ternopil State Technical University, Ukraine | | Abstract: | In the present paper metal-insulator transition is studied in a generalized Hubbard model with correlated hopping at half-filling and zero temperature. Single-particle Green function and energy spectrum of electron system are calculated. The expressions for energy gap width and the concentration of polar states (holes or doublons) are obtained. The conditions for metallic and insulating states are found. | | Source: | arXiv, cond-mat/9811213 | | Services: | Forum | Review | PDF | Favorites | |
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