Topological charge pumping effect by the magnetization dynamics on the Surface of Three-Dimensional Topological Insulators
Strongly Correlated Electrons
2015-03-19 v2
Abstract
We discuss a current dynamics on the surface of a 3-dimensional topological insulator induced by magnetization precession of a ferromagnet attached. It is found that the magnetization dynamics generates a direct charge current when the precession axis is within the surface plane. This rectification effect is due to a quantum anomaly and is topologically protected. The robustness of the rectification effect against first-varying exchange field and impurities is confirmed by explicit calculation.
Keywords
Cite
@article{arxiv.1109.6816,
title = {Topological charge pumping effect by the magnetization dynamics on the Surface of Three-Dimensional Topological Insulators},
author = {Hiroaki T. Ueda and Akihito Takeuchi and Gen Tatara and Takehito Yokoyama},
journal= {arXiv preprint arXiv:1109.6816},
year = {2015}
}
Comments
6 pages, 4 figures