title: Observation of Thermoelectric Currents in High-Field Superconductor-Ferromagnet Tunnel Junctions.
abstract: We report on the experimental observation of spin-dependent thermoelectric currents in superconductor-ferromagnet tunnel junctions in high magnetic fields. The thermoelectric signals are due to a spin-dependent lifting of the particle-hole symmetry, and are found to be in excellent agreement with recent theoretical predictions. The maximum Seebeck coefficient inferred from the data is about -100  μV/K, much larger than commonly found in metallic structures. Our results directly prove the coupling of spin and heat transport in high-field superconductors.
authors.affiliation: Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Kolenda
authors.affiliation: Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany.
authors.forename: M J
authors.initials: MJ
authors.lastname: Wolf
authors.affiliation: Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Beckmann