We investigate superconductor/insulator/ferromagnet/superconductor (SIFS) tunnel Josephson junctions in the dirty limit, using the quasiclassical theory. We consider the case of a strong tunnel barrier such that the left S layer and the right FS bilayer are decoupled. We calculate quantitatively the density of states (DOS) in the FS bilayer for arbitrary length of the ferromagnetic layer, using a self-consistent numerical method. We compare these results with a known analytical DOS approximation, which is valid when the ferromagnetic layer is long enough. Finally we calculate quantitatively the current-voltage characteristics of a SIFS junction.
@article{arxiv.0911.0846,
title = {Dissipative current in SIFS Josephson junctions},
author = {A. S. Vasenko and S. Kawabata and A. A. Golubov and M. Yu. Kupriyanov and F. W. J. Hekking},
journal= {arXiv preprint arXiv:0911.0846},
year = {2015}
}
Comments
Proceedings of the Vortex VI conference, to be published in Physica C