Volume 2, Issue 2, June 2016, Page: 8-20
Spin-Orbit Induced Dynamics in Multilayer Nanostructures
Andrii Korostil, Institute of Magnetism of National Academy of Sciences of Ukraine, Kyiv, Ukraine
Mykola Krupa, Institute of Magnetism of National Academy of Sciences of Ukraine, Kyiv, Ukraine
Received: Sep. 17, 2016;       Accepted: Oct. 17, 2016;       Published: Oct. 28, 2016
DOI: 10.11648/j.ajn.20160202.11      View  3069      Downloads  132
Abstract
Features of the current spin-orbit induced magnetic dynamics in multilayer nanostructures with nonmagnetic heavy metal layers possessing by a strong spin-orbit interaction are studied. These structures include ferromagnetic (F) (antiferromagnetic AF)/normal metal (N) nanostructures based on both conductive and insulating magneticsand heavy normal metals (e. g., FeCoB/Ta, YIG/Pt, Nio/Pt). The spin Hall effect of the conversion of an incoming charge current into a transverse (with respect to the charge current) spin current induces a spin-transfer torque and magnetic dynamics including a magnetic precession and switching. The magneto-dynamic effect of a spin current pumping generation together with the inverse spin Hall effect of conversion of the spin current into the incoming charge current provide the influence of the magnetic dynamics on the incoming charge current. These feedforward and feedback between the incoming charge current and the magnetic dynamics can be the basis for the spin-orbit driven self-sustained auto-oscillations of a magnetic order in the nanostructures. It is shown that the considered magnetic nanostructures possess by properties of controlled microwave radiation attaining tens THz in the antiferromagnetic case. Magnetic-induced changes of the electric resistance in the mentioned nanostructure are considered.
Keywords
Magnetic Nanostructures, Magnetic Dynamics, Spin Currents, Spin Hall Effects, Feedback, Nano-Oscillations
To cite this article
Andrii Korostil, Mykola Krupa, Spin-Orbit Induced Dynamics in Multilayer Nanostructures, American Journal of Nanosciences. Vol. 2, No. 2, 2016, pp. 8-20. doi: 10.11648/j.ajn.20160202.11
Copyright
Copyright © 2016 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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