Comment on “Theory of microwave-induced zero-resistance states in two-dimensional electron systems” and on “Microwave-induced zero-resistance states and second-harmonic generation in an ultraclean two-dimensional electron gas”

Abstract

Recent papers by S. A. Mikhailov [Phys. Rev. B 83, 155303 (2011) and Phys. Rev. B 89, 045410 (2014)] claim to explain ``all experimental facts'' pertinent to microwave-induced resistance oscillations and zero-resistance states in terms of ``the ponderomotive force theory.'' This Comment shows that the analysis of the results obtained in the above-mentioned papers, in fact, leads to opposite conclusions, i.e., that they cannot explain even the most basic experimental facts.