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arXiv · 1611.00158

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

V. V. Val'kov·D. M. Dzebisashvili·M. M. Korovushkin·A. F. Barabanov
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Abstract

Within the spin-fermion model for cuprate superconductors, the influence of the intersite Coulomb interactions $V_2$ and $V_2'$ between holes located at the next-nearest-neighbor oxygen ions of CuO$_2$ plane on the implementation of the d_{x^2-y^2}-wave pairing is studied. It is shown that d-wave pairing can be suppressed only for unphysically large values of $V_2$ and $V_2'$.

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V. V. Val'kov, D. M. Dzebisashvili, M. M. Korovushkin, A. F. Barabanov. 2016-11-03. Stability of the d-wave pairing with respect to the intersite Coulomb repulsion in cuprate superconductors. https://doi.org/10.1016/j.jmmm.2016.12.090

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