Superconductivity in a two-dimensional superconductor with Rashba and Dresselhaus spin-orbit couplings
Abstract
We present a general model with both Rashba and Dresselhaus spin-orbit couplings to describe a two-dimensional noncentrosymmetric superconductor. The combined effects of the two spin-orbit couplings on superconductivity are investigated in the framework of mean-field theory. We find that the Rashba and Dresselhaus spin-orbit couplings result in similar effects on superconductivity if they are present solely in the system. Mixing of spin-singlet and triplet pairings in electron band is induced under the assumption that each quasiparticle band is p-wave paired. If the two types of spin-orbit couplings appear jointly, both the singlet and triplet pairings are weakened and decreased down to their minimum values in the equal-Rashba-Dresselhaus case.
Keywords
Cite
@article{arxiv.1402.6483,
title = {Superconductivity in a two-dimensional superconductor with Rashba and Dresselhaus spin-orbit couplings},
author = {Xu Yan and Qiang Gu},
journal= {arXiv preprint arXiv:1402.6483},
year = {2022}
}
Comments
5 pages, 4 figures