GUTZWILLER APPROXIMATION IN DEGENERATE HUBBARD MODELS
نویسندگان
چکیده
منابع مشابه
Gutzwiller Approximation in Degenerate Hubbard Models
Degenerate Hubbard models are studied using the Generalized-GutzwillerApproximation. It is found that the metal-insulator transition occurs at a finite correlation Uc when the average number of electrons per lattice site is an integer. The critical Uc depends sensitively on both the band degeneracy N and the filling x. A derivation is presented for the general expression of Uc(x,N) which reprod...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics B
سال: 1996
ISSN: 0217-9792,1793-6578
DOI: 10.1142/s0217979296002026