Radiation polarization dependence of microwave-induced magnetoresistance oscillations in high-mobility 2D electron systems

Effects of incident microwave polarization on electron energy absorption, electron temperature and radiation-induced magnetoresistance oscillation are examined in magnetic-field biased high-mobility two-dimensional electron systems. It is found that the absorption rate and the rise of the electron temperature are dependent on the polarization type of the radiation but independent of the direction of linearly polarized radiation. The amplitude of radiation-induced magnetoresistance oscillation, however, not only strongly depends on the polarization type but also sensitively varies with changing linear-polarization direction of the incident radiation, in agreement with recent experimental observation.