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Weak localization correction to the ferromagnet-superconductor interface resistance

McCann, E. and Falko, Vladimir and Volkov, A. F. and Lambert, C. J. (2000) Weak localization correction to the ferromagnet-superconductor interface resistance. Physical Review B, 62 (9). pp. 6015-6020. ISSN 1098-0121

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Abstract

The classical resistance of a contact between a ferromagnet (F) and a superconductor (S) acquires an additional contact term as compared to the contact between a ferromagnet and a normal metal. The necessity to match spin-polarized current in a ferromagnet to spinless current in the superconductor results in the accumulation of nonequilibrium polarization near the F/S interface. In the present work; we show that the weak localization correction to the classical diffusion coefficient delta D is dependent on the degree of polarization, with majority spins more likely to be reflected from the interface than minority spins. Taking into account the change in the spin polarized particle distribution in the F wire arising from delta D, we calculate the weak localization correction to the F/S contact resistance.

Item Type: Article
Journal or Publication Title: Physical Review B
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 580
Deposited By: Prof Colin J. Lambert
Deposited On: 04 Jul 2007
Refereed?: Yes
Published?: Published
Last Modified: 17 Sep 2013 08:23
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/580

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