Spin-orbit coupling and spin-triplet pairing symmetry in Sr2RuO4

被引:26
|
作者
Wang, Zhiqiang [1 ,2 ]
Wang, Xin [1 ]
Kallin, Catherine [1 ]
机构
[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada
[2] Univ Chicago, James Franck Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA
基金
加拿大自然科学与工程研究理事会;
关键词
SUPERCONDUCTING STATE; BREAKING;
D O I
10.1103/PhysRevB.101.064507
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Spin-orbit coupling (SOC) plays a crucial role in determining the spin structure of an odd parity psedospin-triplet Cooper pairing state. Here, we present a thorough study of how SOC lifts the degeneracy among different p-wave pseudospin-triplet pairing states in a widely used microscopic model for Sr2RuO4, combining a Ginzburg-Landau (GL) free energy expansion, a symmetry analysis of the model, and numerical weak-coupling renormalization group (RG) and random phase approximation (RPA) calculations. These analyses are then used to critically re-examine previous numerical results on the stability of chiral p-wave pairing. The symmetry analysis can serve as a guide for future studies, especially numerical calculations, on the pairing instability in Sr2RuO4 and can be useful for studying other multiband spin-triplet superconductors where SOC plays an important role.
引用
收藏
页数:12
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