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

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

2005-01-24

arxiv.org/abs/cond-mat/0501566v1

Phys. Rev. B 72, 014510 (2005)

Physics

Condensed Matter

Superconductivity

6 pages, 6 figures

Scientific paper

10.1103/PhysRevB.72.014510

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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