High temperature superconductivity with repulsive pairing interactions

Abstract

a b s t r a c tA pairing Hamiltonian HðCÞ with an interaction kernel C characterized by ½ÀC 0 ; Àa 0 , where C 0 denotes the separable part and a 0 the degree of non-separability, produces high temperature superconductivity for both attractive C 0 > 0 and repulsive C 0 < 0 when a 0 > 0. For C 0 > 0, typical HTS properties, e.g. cuprate, are produced. Repulsive C 0 < 0 produces a distinct difference in the kinetic energy dependence of the SC gap, significantly altering thermodynamic properties.