title: Spin Seebeck effect and thermoelectric phenomena in superconducting hybrids with magnetic textures or spin-orbit coupling.
abstract: We theoretically consider the spin Seebeck effect, the charge Seebeck coefficient, and the thermoelectric figure of merit in superconducting hybrid structures including either magnetic textures or intrinsic spin-orbit coupling. We demonstrate that large magnitudes for all these quantities are obtainable in Josephson-based systems with either zero or a small externally applied magnetic field. This provides an alternative to the thermoelectric effects generated in high-field (~1 T) superconducting hybrid systems, which were recently experimentally demonstrated. The systems studied contain either conical ferromagnets, spin-active interfaces, or spin-orbit coupling. We present a framework for calculating the linear thermoelectric response for both spin and charge of a system upon applying temperature and voltage gradients based on quasiclassical theory which allows for arbitrary spin-dependent textures and fields to be conveniently incorporated.
authors.affiliation: Department of Physics, NTNU, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.|Department of Physics, Centre for Materials Science and Nanotechnology, University of Oslo, N-0316 Oslo, Norway.
authors.forename: Marianne Etzelmüller
authors.initials: ME
authors.lastname: Bathen
authors.affiliation: Department of Physics, NTNU, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.
authors.forename: Jacob
authors.initials: J
authors.lastname: Linder