Berry-curvature-induced Quasiparticle Nernst Effect in Superconductors

Nernst effect is a transverse thermoelectric response that has been observed not only in metals, but recently also in Van der Waals superconductors. While such response has mainly been attributed to vortices or short-lived Cooper pairs, recent theoretical studies have suggested that Berry curvatures (BC) of Bogoliubov quasiparticles could also drive Nernst effect in superconductors. Here, we theoretically show that BC-induced Nernst signals can be largely enhanced in Ising superconductors when the Rashba spin-orbit coupling strength near the pairing gap is comparable to the Ising splitting. Moreover, we find an unexpected temperature-induced sign change in the Nernst signal, which can be used to identify its BC origin in detection. Finally, I will propose an experimental setup for detecting this BC-induced Nernst effect and candidate superconducting materials.