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arXiv · 0911.0846

Dissipative current in SIFS Josephson junctions

A. S. Vasenko·S. Kawabata·A. A. Golubov·M. Yu. Kupriyanov·F. W. J. Hekking
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Abstract

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.

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A. S. Vasenko, S. Kawabata, A. A. Golubov, M. Yu. Kupriyanov, F. W. J. Hekking. 2009-11-04. Dissipative current in SIFS Josephson junctions. https://doi.org/10.1016/j.physc.2010.02.081

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