Magnetotransport in a two-dimensional electron system in dc electric fields

Details Magnetotransport in a two-dimensional electron system in dc electric fields Magnetotransport in a two-dimensional electron system in dc electric fields

2006-08-31

arxiv.org/abs/cond-mat/0608727v3

Phys. Rev. B 75, 041304(R) (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Revised version, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.75.041304

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.

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