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- Title
Effect of Electric Current on the Spin Polarization of Electrons in Materials with Nonuniform Magnetization.
- Authors
Bebenin, N. G.
- Abstract
The nonequilibrium magnetization (spin polarization) of conducting electrons moving in materials with a nonuniform magnetization distribution is analyzed theoretically. Both stationary states and transient processes occurring upon the current switching on and off are considered. Because of the coordinate dependence of the magnetization, the passage of current leads to a deviation of the charge carrier magnetization from its equilibrium value. Based on a simple model for nonequilibrium magnetization, the expression describing the coordinate dependence of the nonequilibrium magnetization is obtained in terms of the drift length and the spin diffusion length. It is shown that the effect is the strongest when the coordinate derivative of the magnetization is maximal. Various examples of media with a nonuniform magnetization are considered, including periodic structures such as spin density waves and artificial superlattices.
- Subjects
ELECTRON spin; ELECTRIC currents; POLARIZED electrons; SPIN polarization; SPIN waves; NUCLEAR spin; NON-equilibrium reactions
- Publication
Journal of Experimental & Theoretical Physics, 2022, Vol 134, Issue 5, p630
- ISSN
1063-7761
- Publication type
Article
- DOI
10.1134/S1063776122050028