6 citations · 6 across the 2 of their papers we have counts for
4 papers
Effects of the Hybridization on the Fermi Surface of an Extended Hubbard Model
E. J. Calegari, S. G. Magalhaes, A. A. Gomes
The Fermi surface (FS) of an extended Hubbard model is investigated by a two-pole approximation in both situations with hole and electron doping. Using the factorization proc…
Antiferromagnetic Ising spin glass competing with BCS pairing interaction in a transverse field
S. G. Magalhaes, F. M. Zimmer, C. J. Kipper +1
The competition among spin glass (SG), antiferromagnetism (AF) and local pairing superconductivity (PAIR) is studied in a two-sublattice fermionic Ising spin glass model with a loc…
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…
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…