Weak localization correction to the ferromagnet-superconductor interface resistance

E. McCann*, V. I. Fal'Ko, A. F. Volkov, C. J. Lambert

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    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 δD 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 δD, we calculate the weak localization correction to the F/S contact resistance.

    Original languageEnglish
    Pages (from-to)6015-6020
    Number of pages6
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume62
    Issue number9
    DOIs
    Publication statusPublished - 1 Sept 2000

    Research Beacons, Institutes and Platforms

    • National Graphene Institute

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