SPIN-CHARGE STRIPE STRUCTURE OF SUPERCONDUCTING YBa2Cu3O6+x

Abstract

According to the recent neutron scattering data on YBCO, it has been concluded that the incommensurability of the spin dynamics is a common feature among oxide high-Tc superconductors, which cannot be explainable by Fermi surface anomaly. In this paper, we speculate a possible scenario of the mechanism of the superconductivity based upon an assumption of the stripe domain structures; RVB-like spin singlet formation plays a primary role for the attractive force for the Cooper pair formation of dopant holes existing in the adjacent charge chain site, which is separated by the spin stripes.