Effects of the Hybridization on the Fermi Surface of an Extended $d-p$ Hubbard Model

E. J. Calegari, S. G. Magalhaes, A. A. Gomes

The Fermi surface (FS) of an extended $d-p$ Hubbard model is investigated by a two-pole approximation in both situations with hole and electron doping. Using the factorization proc…