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Surface spin-transfer torque and spin-injection effective field in ferromagnetic junctions: Unified theory

R. J. Elliott·E. M. Epshtein·Yu. V. Gulyaev·P. E. Zilberman
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Abstract

We consider theoretically a current flowing perpendicular to interfaces of a spin-valve type ferromagnetic metallic junction. For the first time an effective approach is investigated to calculate a simultaneous action of the two current effects, namely, the nonequilibrium longitudinal spin injection and the transversal spin-transfer surface torque. Dispersion relation for fluctuations is derived and solved. Nonlinear problem is solved about steady state arising due to instability for a thick enough free layer.

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R. J. Elliott, E. M. Epshtein, Yu. V. Gulyaev, P. E. Zilberman. 2005-07-25. Surface spin-transfer torque and spin-injection effective field in ferromagnetic junctions: Unified theory. https://doi.org/10.1016/j.jmmm.2005.10.047

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