Volume 6, Issue 1, March 2018, Page: 21-33
Spin Transport and Dynamics in Multilayer Magnetic Nanostructures
Andrii Korostil, Department of Magnetic Mesoscopic Materials and Nanocrystalline Structures, Institute of Magnetism, Kyiv, Ukraine
Mykola Krupa, Department of Magnetic Mesoscopic Materials and Nanocrystalline Structures, Institute of Magnetism, Kyiv, Ukraine
Received: Mar. 26, 2018;       Accepted: Apr. 13, 2018;       Published: May 11, 2018
DOI: 10.11648/j.nano.20180601.13      View  885      Downloads  46
Abstract
The interconnection between the spin current and spin dynamics via the spin-dependent scattering and an accompanying by spin torque effect in ferromagnetic/normal metal based magnetic multilayer nanostructures is studied including a high fast out-of-equilibrium spin dynamics. Features of the spin transport through interfaces and its impact on spin dynamics are described on the base of the scattering matrix formalism for spin flows. The dependence of the spin torque effect on conductance character of the normal metal layers is considered. The exchange processes between the itinerant s and the localized d electrons are described by kinetic rate equations for electron-magnon spin-flop scattering. It is shown that the magnon distribution function remains nonthermalized on the relevant time scales of the demagnetization process, and the relaxation of the out-of-equilibrium spin accumulation among itinerant electrons provides the principal channel for dissipation of spin angular momentum from the combined electronic system.
Keywords
Magnetic Nanostructures, Spin Transport, Scattering, Spin Torque Effect, Electron-Magnon Spin-flop Scattering, Nonequilibrium Spin Dynamics
To cite this article
Andrii Korostil, Mykola Krupa, Spin Transport and Dynamics in Multilayer Magnetic Nanostructures, American Journal of Nano Research and Applications. Vol. 6, No. 1, 2018, pp. 21-33. doi: 10.11648/j.nano.20180601.13
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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