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Critical behaviour near the metal-insulator transition of a doped Mott insulator | | Y. Ono
; R. Bulla
; A. C. Hewson
; M. Potthoff
; | | Date: |
15 Mar 2001 | | Journal: | Eur. Phys. J. B 22, 283 (2001) | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Abstract: | We have studied the critical behaviour of a doped Mott insulator near the metal-insulator transition for the infinite-dimensional Hubbard model using a linearized form of dynamical mean-field theory. The discontinuity in the chemical potential in the change from hole to electron doping, for $U$ larger than a critical value $U_c$, has been calculated analytically and is found to be in good agreement with the results of numerical methods. We have also derived analytic expressions for the compressibility, the quasiparticle weight, the double occupancy and the local spin susceptibility near half-filling as functions of the on-site Coulomb interaction and the doping. | | Source: | arXiv, cond-mat/0103315 | | Services: | Forum | Review | PDF | Favorites | |
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