Spin-orbit coupling effect in high-temperature superconductorsHao Meng, Hong-Wei Zhao, Ling-feng Zhang, Liang-Ma Shi, Guo-Qiao Zha and Shi-Ping Zhou
Department of Physics, Shanghai University - 99 Shangda Road, Shanghai 200444, PRC
received 9 July 2009; accepted in final form 16 September 2009; published October 2009
published online 16 October 2009
The spin-orbit (SO) coupling effect is investigated by self-consistently diagonalizing a model Hamiltonian with competing antiferromagnetic (AF) and d-wave superconductivity (DSC) orders for high-temperature superconductors. SO-coupling–induced spin-split and -flip competition with AF order can lead to a double-peak spectrum of the vortex-core state, and vortex charge sign change. Scanning tunneling microscopy spectra on differential conductance and nuclear magnetic resonance experiments on vortex charges for YBa2Cu3O7-x are interpreted.
74.20.-z - Theories and models of superconducting state.
74.25.Jb - Electronic structure.
74.25.Ha - Magnetic properties.
© EPLA 2009