Charge and spin wiedemann-franz law in superconductor-ferromagnet- superconductor junction

Abstract

In this paper, the influence of superconducting proximity effect on the thermal, charge and spin transport in a nanoscale superconductor-ferromagnet- superconductor (SFS) junction is investigated. These calculations are done in the clean limit and in the frame-work of quasiclassical Eilenberger equations. Then by using the obtained density of states (DOS), we obtain the thermal and electrical and spin conductances for SFS junction. Also, we investigate validity of the Wiedemann-Franz (WF) law in this SFS structure. © 2013 The Physical Society of Japan.