Abstract
Features of the current spin-orbit-induced magnetic dynamics in multilayer nanostructures with nonmagnetic heavy metal layers possessing a strong spin-orbit interaction are studied. These structures include ferromagnetic (FM) and antiferromagnetic (AF)/normal metal (NM) nanostructures based on both conductive and insulating magnetics and 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 provides 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 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.
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Korostil, A.M., Krupa, M.M. (2017). Current Spin-Orbit-Induced Microwave Magnetic Dynamics in Layered Nanostructures. In: Fesenko, O., Yatsenko, L. (eds) Nanophysics, Nanomaterials, Interface Studies, and Applications . NANO 2016. Springer Proceedings in Physics, vol 195. Springer, Cham. https://doi.org/10.1007/978-3-319-56422-7_8
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DOI: https://doi.org/10.1007/978-3-319-56422-7_8
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