Interface resistance in ferromagnet/superconductor junctions

Details Interface resistance in ferromagnet/superconductor junctions Interface resistance in ferromagnet/superconductor junctions

1999-07-13

arxiv.org/abs/cond-mat/9907194v1

Physics

Condensed Matter

Superconductivity

6 pages, 5 figures, Proceedings of the 5th Twente Workshop on Digital Applications, Josephson Junctions and Sensors, to be pub

Scientific paper

10.1016/S0921-4534(99)00370-6

Results of theoretical study of spin-polarized tunneling in ferromagnet/superconductor junctions are presented. Spin and charge currents are calculated as a function of applied voltage and spin polarization in a ferromagnet. The model takes into account the splitting of different spin subbands in a ferromagnet and impurity scattering in the contact. The excess resistance of an FS contact due to the charge-imbalance in a superconductor is calculated for the first time. The results have implications for spin-coupled magnetoresistance in ferromagnet/superconductor contacts and for measuring spin polarization in ferromagnets.

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