Chiral spin texture scenario for high-temperature superconductivity

A unified picture describing several aspects of the physics of high-temperature superconductivity is proposed. Analysis of the nonlinear sigma model suggests formation of a chiral spin texture creation around a hole through the formation of the Zhang-Rice singlet. The same spin texture is also formed in the t-J model by explicitly taking into account the local constraint. A system of the hole induced chiral spin textures naturally leads to a d-wave superconducting state. Numerical simulations suggest inhomogeneous chirality density profiles and incommensurate spin correlations in the moderately hole doping regime. (c) 2007 Elsevier B.V. All rights reserved.