Light-induced bound electron states in two-dimensional systems: Contribution to electron transport

In two-dimensional (2D) electron systems, an off-resonant high-frequency circularly polarized electromagnetic field can induce the quasistationary bound electron states of repulsive scatterers. As a consequence, the resonant scattering of conduction electrons through the quasistationary states and the capture of conduction electrons by the states appear. The present theory describes the transport properties of 2D electron gas irradiated by a circularly polarized light, which are modified by these processes. Particularly, it is demonstrated that irradiation of 2D electron systems by the off-resonant field results in the quantum correction to conductivity of resonant kind.