文档介绍：
Influence of p-wave pairing potential and spin-orbit
coupling in two-dimensional noncentrosymmetric
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superconductors#
Yan Xu, Zhao Jingxiang, Gu Qiang**
(Department of Physics, University of Science and Technology Beijing, Beijing 100083)
Abstract: Both pairing potential and spin-orbit coupling (SOC) play important roles in
two-dimensional noncentrosymmetric superconductivity. Supposing that p-wave pairing potential V is
present between quasiparticles, s-wave spin-singlet pairs arise and mix with p-wave spin-triplet pairs in
the electron space. Our results show that the effect of SOC on the electron superconducting order
parameters is different in weak pairing potential regime from that in stronger pairing potential regime.
If the pairing potential V< , both the s-wave and p-wave pairings are enhanced by the SOC. On the
other hand, when V>, increasing SOC leads to increment of the p-wave pairing, but reduction of the
s-wave one. In both two cases, the ratio of the magnitude of the triplet and ponents is
always increased with SOC.
Key words: Condensed matter physics; pairing potential; spin-orbit coupling
0 Introduction
In recent years, a number of noncentrosymmetric (NCS) superconductors are
discovered, including CePt 3Si [1], UIr [2], Li2 (Pd1-x , Pt x )3 B [3], LaAlO3 /SrTiO3 [4]
and pounds[5]. Due to the lack of inver