Net current generation in a 1D quantum ring at zero magnetic field
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
We study a non-adiabatic excitation of an electron system in a 1D quantum ring radiated by a short THz pulse. The response of two models, a continuous and discrete, is explored. By introducing a spatial asymmetry in the external perturbation a net current can be generated in the ring at a zero magnetic field. Effect of impurities and ratchets are investigated in combination with symmetric and asymmetric external excitation.
Cite
@article{arxiv.cond-mat/0402582,
title = {Net current generation in a 1D quantum ring at zero magnetic field},
author = {Sigridur Sif Gylfadottir and Marian Nita and Vidar Gudmundsson and Andrei Manolescu},
journal= {arXiv preprint arXiv:cond-mat/0402582},
year = {2007}
}
Comments
LaTeX 4 pages with 6 embedded postscript figures