%0 Journal Article
%T Manifestation of a spin-splitting field in a thermally-biased Josephson junction
%A F. S. Bergeret
%A F. Giazotto
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevB.89.054505
%X We investigate the behavior of a Josephson junction consisting of a ferromagnetic insulator-superconductor (FI-S) bilayer tunnel-coupled to a superconducting electrode. We show that the Josephson coupling in the structure is strenghtened by the presence of the spin-splitting field induced in the FI-S bilayer. Such strenghtening manifests itself as an increase of the critical current $I_c$ with the amplitude of the exchange field. Furthermore, the effect can be strongly enhanced if the junction is taken out of equilibrium by a temperature bias. We propose a realistic setup to assess experimentally the magnitude of the induced exchange field, and predict a drastic deviation of the $I_c(T)$ curve ($T$ is the temperature) with respect to equilibrium.
%U http://arxiv.org/abs/1312.1945v1