Radiation-induced magnetoresistance oscillations in two-dimensional electron systems

We carry out a systematic theoretical analysis on radiation induced magnetoresistance oscillations (RI-MOs) in high-mobility two-dimensional electron systems (2DESs), based on the balance-equation approach to magnetotransport developed for high-carrier-density systems. The time-dependent drift velocity v(i) and electron temperature Te serve as the basic parameters, which enter the frictional force, energy absorption and energy dissipation rates and are determined through the force and energy balance equations when the incident radiation field is given. The model covers regimes of inter-and intra-Landau level processes, takes account of multiphoton-assisted electron transitions as well as radiation-induced change of the electron distribution, and naturally includes electrodynamic damping. Electron scatterings by impurities, transverse and longitudinal acoustic phonons as well as polar optic phonons are considered simultaneously.