Microwave photoresponse in the 2D electron system caused by intra-Landau level transitions
arXiv:cond-mat/0409228 · doi:10.1103/PhysRevB.71.201306
Abstract
The influence of microwave radiation on the DC-magnetoresistance of 2D-electrons is studied in the regime beyond the recently discovered zero resistance states when the cyclotron frequency exceeds the radiation frequency. Radiation below 30 GHz causes a strong suppression of the resistance over a wide magnetic field range, whereas higher frequencies produce a non-monotonic behavior in the damping of the Shubnikov-de Haas oscillations. These observations are explained by the creation of a non-equilibrium electron distribution function by microwave induced intra-Landau level transitions.
4 pages, 5 figures