Interplay between spin-relaxation and Andreev reflection in ferromagnetic wires with superconducting contacts

Fal'ko, V I and Falko, Vladimir and Volkov, A F and Lambert, Colin (1999) Interplay between spin-relaxation and Andreev reflection in ferromagnetic wires with superconducting contacts. Physical review B, 60 (22). pp. 15394-15397. ISSN 1098-0121

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Abstract

We analyze the change in the resistance of a junction between a diffusive ferromagnetic (F) wire and normal-metal electrode, due to the onset of superconductivity (S) in the latter and a double Andreev scattering process leading to a complete internal reflection of a large fraction of the spin-polarized electrons back into the ferromagnet. The superconducting transition results in an additional contact resistance arising from the necessity to match the spin-polarized current in F wire to the spinless current in S reservoir, which is comparable to the resistance of a piece of a F wire with the length equal to the spin-relaxation length. [S0163-1829(99)03342-1].

Item Type:
Journal Article
Journal or Publication Title:
Physical review B
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
57048
Deposited By:
Deposited On:
17 Aug 2012 10:09
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Apr 2020 02:14