Floquet states and persistent currents transitions in a mesoscopic ring
Mesoscale and Nanoscale Physics
2009-11-07 v1
Abstract
We consider the effect of an oscillating potential on the single-particle spectrum and the time-averaged persistent current of a one-dimensional phase-coherent mesoscopic ring with a magnetic flux. We show that in a ring with an even number of spinless electrons the oscillating potential has a strong effect on the persistent current when the excited side bands are close to the eigen levels of a pure ring. Resonant enhancement of side bands of the Floquet state generates a sign change of the persistent current.
Cite
@article{arxiv.cond-mat/0207258,
title = {Floquet states and persistent currents transitions in a mesoscopic ring},
author = {M. Moskalets and M. Buttiker},
journal= {arXiv preprint arXiv:cond-mat/0207258},
year = {2009}
}
Comments
2 figures