Spin-orbit coupling induced enhancement of superconductivity in a two-dimensional repulsive gas of fermions

被引：13
|
作者：
Vafek, Oskar [1 ]
Wang, Luyang
机构：
[1] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA
来源：
PHYSICAL REVIEW B | 2011年 / 84卷 / 17期
基金：
美国国家科学基金会;
关键词：
SUPERFLUIDITY;
D O I：
10.1103/PhysRevB.84.172501
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study a model of a two-dimensional repulsive Fermi gas with Rashba spin-orbit coupling alpha(R) and investigate the superconducting instability using the renormalization-group approach. We find that, in general, superconductivity is enhanced as the dimensionless ratio 1/2m alpha(2)(R)/E-F increases, resulting in unconventional superconducting states which break time-reversal symmetry.
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页数：4
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