Metallic non-Fermi-liquid phases of an extended Hubbard model in infinite dimensions.

  • Si, Kotliar
  • Published 1993 in Physical review. B, Condensed matter


We study an extended Hubbard model in the limit of infinite dimensions and its zero dimensional counterpart, a generalized asymmetric Anderson model. In the impurity model we find three kinds of mixed valence states: a) the usual strong coupling state in which a resonance forms at the Fermi level; b) a weak coupling state in which neither the impurity spin… (More)


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