Spin-transfer in diffusive ferromagnet-normal metal systems with spin-flip scattering

Details Spin-transfer in diffusive ferromagnet-normal metal systems with spin-flip scattering Spin-transfer in diffusive ferromagnet-normal metal systems with spin-flip scattering

2002-07-18

arxiv.org/abs/cond-mat/0207458v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 3 figures

Scientific paper

10.1103/PhysRevB.66.224424

The spin-transfer in biased disordered ferromagnet (F) - normal metal (N) systems is calculated by the diffusion equation. For F1-N2-F2 and N1-F1-N2-F2-N3 spin valves, the effect of spin-flip processes in the normal metal and ferromagnet parts are obtained analytically. Spin-flip in the center metal N2 reduces the spin-transfer, whereas spin-flip in the outer normal metals N1 and N3 can increase it by effectively enhancing the spin polarization of the device.

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