Berry curvature induced spin Nernst and thermal Edelstein effects in proximity superconductors
Phys. Rev. B 114, 264504 – Published 5 November, 2026
DOI: https://doi.org/10.1103/k116-1b1f
Abstract
We investigate two thermospintronic responses in proximity-induced superconductors with spin-orbit coupled band: the spin Nernst effect and the thermal Edelstein effect stemming, respectively, from momentum-space and mixed superconducting Berry curvatures. We unveil that the Bloch band spin-orbit coupling and pairing are entangled in shaping the superconducting Berry curvatures rather than in an additive manner. The resulting thermospintronic responses are significantly enhanced at low temperatures by the emergence of Bogoliubov-Fermi surface, and can be effectively controlled by tuning the latter. The effects render a probe of Bogoliubov-Fermi surface and superconducting Berry curvatures supported by it. Our work reveals Berry curvature properties in topologically trivial proximity superconductors with spin-orbit coupling, and opens a new route to superconducting spintronics.
