Effects of the dynamical magnetization state on spin transfer
- URL: http://arxiv.org/abs/2101.08868v1
- Date: Thu, 21 Jan 2021 22:12:03 GMT
- Title: Effects of the dynamical magnetization state on spin transfer
- Authors: Neil Tramsen, Alexander Mitrofanov, Sergei Urazhdin
- Abstract summary: 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.
Our results suggest that exquisite control of spin transfer efficiency and of the resulting dynamical magnetization states may be achievable.
- Score: 68.8204255655161
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- 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 conversation laws, resulting in a
significant dependence of spin transfer on the electron's energy and the
dynamical state of the local spins. 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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