Stability of the d-wave pairing with respect to the intersite Coulomb repulsion in cuprate superconductors

Val'kov, V. V.; Dzebisashvili, D. M.; Korovushkin, M. M.; Barabanov, A. F. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 440 123-126; Doi: 10.1016/j.jmmm.2016.12.090 OCT 15 2017

Within the spin-fermion model for cuprate superconductors, the influence of the intersite Coulomb interactions V2 and between holes located at the next-nearest-neighbor oxygen ions of CuO2 plane on the implementation of the -wave pairing is studied. It is shown that d-wave pairing can be suppressed only for unphysically large values of V2 and .