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Spin transport and magnetoresistance in F/S/F spin valves

Jan Petter Morten·Arne Brataas·Wolfgang Belzig
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Abstract

We consider spin transport and spin relaxation in superconductors using the quasiclassical theory of superconductivity. We include spin relaxation due to spin-orbit interaction as well as magnetic impurities, and show that the energy dependence of the spin-flip rate is different for these two mechanisms. In ferromagnet-superconductor-ferromagnet systems made of Co and Al, interface resistances can be small compared to bulk resistances. This simplifies the description of transport in Co/Al/Co spin valves, for which we numerically calculate the temperature and Al length dependence of the magnetoresistance.

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Jan Petter Morten, Arne Brataas, Wolfgang Belzig. 2005-01-24. Spin transport and magnetoresistance in F/S/F spin valves. https://doi.org/10.1103/physrevb.72.014510

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