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

  title={Spin transfer in diffusive ferromagnet normal metal systems with spin-flip scattering},
  author={Alexey A. Kovalev and Arne Brataas and Gerrit E. W. Bauer},
  journal={Physical Review B},
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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