Current-driven spin injection from a probe to a ferromagnetic film

Details Current-driven spin injection from a probe to a ferromagnetic film Current-driven spin injection from a probe to a ferromagnetic film

2009-12-14

arxiv.org/abs/0912.2602v1

Physics

Condensed Matter

Materials Science

8 pages, 2 figures

Scientific paper

The distribution is calculated of the electron spin polarization under current-driven spin injection from a probe to a ferromagnetic film. It is shown that the main parameters determining difference of the spin polarization from the equilibrium value are the current density and the spin polarization of the probe material, while the relation between the probe diameter and the spin diffusion length influences the result very weakly, to a certain extent. A possibility is shown of reaching inverse population of the spin subbands at distances from the probe boundary comparable with the spin diffusion length.

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