Electron Transport Driven by Nonequilibrium Magnetic Textures
Abstract
Spin-polarized electron transport driven by inhomogeneous magnetic dynamics is discussed in the limit of a large exchange coupling. Electron spins rigidly following the time-dependent magnetic profile experience spin-dependent fictitious electric and magnetic fields. We show that the electric field acquires important corrections due to spin dephasing, when one relaxes the spin-projection approximation. Furthermore, spin-flip scattering between the spin bands needs to be taken into account in order to calculate voltages and spin accumulations induced by the magnetic dynamics. A phenomenological approach based on the Onsager reciprocity principle is developed, which allows us to capture the effect of spin dephasing and make a connection to the well studied problem of current-driven magnetic dynamics. A number of results that recently appeared in the literature are related and generalized.
Cite
@article{arxiv.0710.5193,
title = {Electron Transport Driven by Nonequilibrium Magnetic Textures},
author = {Yaroslav Tserkovnyak and Matthew Mecklenburg},
journal= {arXiv preprint arXiv:0710.5193},
year = {2009}
}
Comments
4 pages, 1 figure