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DOE OSTI · 1775347

Effects of the dynamical magnetization state on spin transfer

Tramsen, Neil·Mitrofanov, Alexander·Urazhdin, Sergei
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Abstract

We utilize simulations of electron scattering by a chain of dynamical quantum spins to analyze the interplay between the spin transfer effect and the magnetization dynamics.We show that the complex interactions between the spin-polarized electrons and the dynamical states of the local spins can be decomposed into separate processes involving electron reflection and transmission, as well as absorption and emission of magnons—the quanta of magnetization dynamics. Analysis shows that these processes are substantially constrained by the energy and momentum conservation laws, resulting in a significant dependence of spin transfer on the electron’s energy and the dynamical state of the local spins. Here, our results suggest that exquisite control of spin transfer efficiency and of the resulting dynamical magnetization states may be achievable by tailoring the spectral characteristics of the conduction electrons and of the magnetic systems.

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75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYmagnonsnanomagnetismspin chainsspin dynamicsspin transferspin transfer torque

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BibTeXRIS

Tramsen, Neil, Mitrofanov, Alexander, Urazhdin, Sergei. 2021-04-12. Effects of the dynamical magnetization state on spin transfer. https://doi.org/10.1103/physrevb.103.134415

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