Mechanism of dx2−y2-wave superconductivity based on hole-doping-induced spin texture in high Tc cuprates
T. Morinari
DOI 10.1103/PhysRevB.73.064504 · Physical Review B
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Abstract
A mechanism of dx2−y2-wave superconductivity is proposed for the high Tc cuprates based on a spin texture with nonzero topological charge density induced by hole doping through Zhang-Rice singlet formation. The pairing interaction arises from a magnetic Lorentz force like the interaction between the holes and the spin textures. The stability of the pairing state against the vortex-vortex interaction and the Coulomb repulsion is examined. The mechanism suggests appearance of a p-wave pairing component by introducing anisotropy in the CuO2 plane.
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