Permanent current from non-commutative spin algebra
Mesoscale and Nanoscale Physics
2009-11-07 v1
Abstract
We show that a spontaneous electric current is induced in a nano-scale conducting ring just by putting three ferromagnets. The current is a direct consequence of the non-commutativity of the spin algebra, and is proportional to the non-coplanarity (chirality) of the magnetization vectors. The spontaneous current gives a natural explanation to the chirality-driven anomalous Hall effect.
Cite
@article{arxiv.cond-mat/0208377,
title = {Permanent current from non-commutative spin algebra},
author = {Gen Tatara and Hiroshi Kohno},
journal= {arXiv preprint arXiv:cond-mat/0208377},
year = {2009}
}
Comments
7 pages, 4 figures on separate page