Nonequilibrium charge dynamics of light-driven rings threaded by a magnetic flux
Mesoscale and Nanoscale Physics
2007-08-23 v1
Abstract
We study theoretically the charge polarization and the charge current dynamics of a mesoscopic ring driven by short asymmetric electromagnetic pulses and threaded by an external static magnetic flux. It is shown that the pulse-induced charge polarization and the associated light-emission is controllable by tuning the external magnetic flux. Applying two mutually perpendicular pulses triggers a charge current in the ring. The interplay between this nonequilibrium and the persistent currents is investigated and the conditions under which the pulses stop the persistent current are identified.
Keywords
Cite
@article{arxiv.cond-mat/0703502,
title = {Nonequilibrium charge dynamics of light-driven rings threaded by a magnetic flux},
author = {A. S. Moskalenko and A. Matos-Abiague and J. Berakdar},
journal= {arXiv preprint arXiv:cond-mat/0703502},
year = {2007}
}
Comments
6 pages, 2 figures; submitted to EPL