Spin-Nernst Effect in Time-Reversal-Invariant Topological Superconductors

被引：7

作者：

Matsushita, Taiki ^{[1
]}

Ando, Jiei ^{[1
]}

Masaki, Yusuke ^{[2
]}

Mizushima, Takeshi ^{[1
]}

Fujimoto, Satoshi ^{[1
,3
]}

Vekhter, Ilya ^{[4
]}

机构：

[1] Osaka Univ, Dept Mat Engn Sci, Toyonaka, Osaka 5608531, Japan

[2] Tohoku Univ, Grad Sch Engn, Dept Appl Phys, Sendai, Miyagi 9808578, Japan

[3] Osaka Univ, Ctr Quantum Informat & Quantum Biol, Toyonaka, Osaka 5608531, Japan

[4] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 09期

基金：

日本学术振兴会;

关键词：

SUPERFLUID HE-3; PHENOMENOLOGICAL THEORY; THERMAL-CONDUCTIVITY; SYMMETRY-BREAKING; PHASE-DIAGRAM; STATE; TRANSITION;

D O I：

10.1103/PhysRevLett.128.097001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the spin-Nernst effect in time-reversal-invariant topological superconductors, and show that it provides smoking-gun evidence for helical Cooper pairs. The spin-Nernst effect stems from asymmetric, in spin space, scattering of quasiparticles at nonmagnetic impurities, and generates a transverse spin current by the temperature gradient. Both the sign and the magnitude of the effect sensitively depend on the scattering phase shift at impurity sites. Therefore the spin-Nernst effect is uniquely suitable for identifying time-reversal-invariant topological superconducting orders.

引用

页数：7

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