Spin switching via quantum dot spin valves
Mesoscale and Nanoscale Physics
2018-01-09 v4 Strongly Correlated Electrons
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.
Cite
@article{arxiv.1707.03373,
title = {Spin switching via quantum dot spin valves},
author = {N. M. Gergs and S. A. Bender and R. A. Duine and D. Schuricht},
journal= {arXiv preprint arXiv:1707.03373},
year = {2018}
}