A pair potential and self-energy model for Hubbard systems (original) (raw)

Physica C: Superconductivity, 1994

Abstract

A model for the high-Tc superconductors which takes into account two O's and one Cu atoms with one orbital in each atom is set up. The dynamically screened hole-hole interaction is deduced from the random-phase approximation. We calculate the pair potential, the spectral function and the density of states of the interacting system, as a function of the quasimomentum of the bubble polarization. We acknowledge financial support from CICYT project MAT91-0955. L.P.P. acknowledges support from the Ministerio de Educación y Ciencia of Spain.

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