Superfluid Spin Transport through Easy-Plane Ferromagnetic Insulators
Mesoscale and Nanoscale Physics
2015-06-17 v4
Abstract
Superfluid spin transport dissipationless transport of spin is theoretically studied in a ferromagnetic insulator with easy-plane anisotropy. We consider an open geometry where spin current is injected into the ferromagnet from one side by a metallic reservoir with a nonequilibrium spin accumulation, and ejected into another metallic reservoir located downstream. Spin transport through the device is studied using a combination of magnetoelectric circuit theory, Landau-Lifshitz-Gilbert phenomenology, and microscopic linear-response theory. We discuss how spin superfluidity can be probed using a magnetically-mediated electron-drag experiment.
Keywords
Cite
@article{arxiv.1311.0288,
title = {Superfluid Spin Transport through Easy-Plane Ferromagnetic Insulators},
author = {So Takei and Yaroslav Tserkovnyak},
journal= {arXiv preprint arXiv:1311.0288},
year = {2015}
}
Comments
5 pages, 2 figures (version published on Phys. Rev. Lett. and supplementary material added)