Magnetotransport in a two-dimensional electron system in dc electric fields
Mesoscale and Nanoscale Physics
2007-05-23 v3
Abstract
We report on nonequilibrium transport measurements in a high-mobility two-dimensional electron system subject to weak magnetic field and dc excitation. Detailed study of dc-induced magneto-oscillations, first observed by Yang {\em et al}., reveals a resonant condition that is qualitatively different from that reported earlier. In addition, we observe dramatic reduction of resistance induced by a weak dc field in the regime of separated Landau levels. These results demonstrate similarity of transport phenomena in dc-driven and microwave-driven systems and have important implications for ongoing experimental search for predicted quenching of microwave-induced zero-resistance states by a dc current.
Cite
@article{arxiv.cond-mat/0608727,
title = {Magnetotransport in a two-dimensional electron system in dc electric fields},
author = {W. Zhang and H. -S. Chiang and M. A. Zudov and L. N. Pfeiffer and K. W. West},
journal= {arXiv preprint arXiv:cond-mat/0608727},
year = {2007}
}
Comments
Revised version, to appear in Phys. Rev. B