The immunity of microwave-induced magneto-resistance oscillations and corresponding zero resistance regions to the direction of (circular) polarization of microwave is studied in this paper. We propose that a spontaneous circular motion of the whole electron fluid would stabilize the system and minimize the polarization sensitivity of the oscillatory DC resistance. Results of a self-consistent calculation capture the qualitative features of the experimental observation.
@article{arxiv.0708.2620,
title = {On the (circular) polarization-independence of microwave-induced resistance oscillations and zero resistance state},
author = {Shenshen Wang and Tai-Kai Ng},
journal= {arXiv preprint arXiv:0708.2620},
year = {2012}
}