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cond-mat.str-el2009★ 2 cited
On the use of a single site approximation to describe correlation in pure metals
C. M. Chaves, A. A. Gomes, A. Troper
The magnetic properties of pure transition-like metals are discussed within the single site approximation, to take into account the electron correlation. The metal is described by…
cond-mat.str-el2005
Compressibility of a two-dimensional extended Hubbard model
E. J. Calegari, S. G. Magalhães, A A. Gomes
The compressibility of an extended Hubbard model is investigated by the Roth's two-pole approximation. Using the factorization procedure proposed by Beenen and Edwards, super…
cond-mat.str-el2005
Superconductivity in a two dimensional extended Hubbard model
E. J. Calegari, S. G. Magalhaes, A. A. Gomes
The Roth's two-pole approximation has been used by the present authors to investigate the role of hybridization in the superconducting properties of an extended Hubbard…