We study non-linear transport phenomena in a high-mobility bilayer system with two closely spaced populated electronic subbands in a perpendicular magnetic field. For a moderate direct current excitation, we observe zero-differential-resistance states with a characteristic 1/B periodicity. We investigate, both experimentally and theoretically, the Hall field-induced resistance oscillations which modulate the high-frequency magneto-intersubband oscillations in our system if we increase the current. We also observe and describe the influence of direct current on the magnetoresistance in the presence of microwave irradiation.
@article{arxiv.1110.1953,
title = {Non-linear transport phenomena in a two-subband system},
author = {S. Wiedmann and G. M. Gusev and O. E. Raichev and A. K. Bakarov and J. C. Portal},
journal= {arXiv preprint arXiv:1110.1953},
year = {2011}
}