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

Abstract

We investigate the spin-Nernst effect in time-reversal invariant topological superconductors, and show that it provides a 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.

5 pages, 3 figures (Supplemental Material: 8 pages)

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Cited by in corpus (7)

• Spin Splitting Nernst Effect in Altermagnet
• Spin caloritronics as a probe of nonunitary superconductors
• Anomalous acoustoelectric effect induced by clapping modes in chiral superconductors
• Anisotropic differential conductance of a mixed parity superconductor/ferromagnet structure
• Impurity bands, line-nodes, and anomalous thermal Hall effect in Weyl superconductors
• Intrinsic spin Nernst effect in topological Dirac and magnetic Weyl semimetals
• Intrinsic Nernst Effect from Berry Curvature in Superconductors