We demonstrate that N(S)-shape current-voltage characteristics proposed to explain zero-resistance state in Corbino(Hall bar) geometry 2DEG (cond-mat/0302063, cond-mat/0303530) cannot account essential features of radiation-induced magnetoresistance oscillations experiments.
Cite
@article{arxiv.cond-mat/0304581,
title = {Comment on: "Current-voltage characteristics and zero-resistance state in 2DEG"},
author = {M. V. Cheremisin},
journal= {arXiv preprint arXiv:cond-mat/0304581},
year = {2007}
}