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arXiv · 1707.03373

Spin switching via quantum dot spin valves

N. M. Gergs·S. A. Bender·R. A. Duine·D. Schuricht
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Abstract

We develop a theory for spin transport and magnetization dynamics in a quantum-dot spin valve, i.e., two magnetic reservoirs coupled to a quantum dot. Our theory is able to take into account effects of strong correlations. We demonstrate that, as a result of these strong correlations, the dot gate voltage enables control over the current-induced torques on the magnets, and, in particular, enables voltage-controlled magnetic switching. The electrical resistance of the structure can be used to read out the magnetic state. Our model may be realized by a number of experimental systems, including magnetic scanning-tunneling microscope tips and artificial quantum dot systems.

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N. M. Gergs, S. A. Bender, R. A. Duine, D. Schuricht. 2018-01-05. Spin switching via quantum dot spin valves. https://doi.org/10.1103/physrevlett.120.017701

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