Возбуждение колебаний двумерного электронного слоя токами, наведенными внешним излучением

Abstract

Theory of interaction of a flow of charged particles with plasmons existing in two-dimensional gas at an interface between media with different electromagnetic properties is developed. It is assumed that electrons in a flow intersecting an area of localization of twodimensional electron layer represent a wave packet which energy is small comparing to the energy of plasmon. Therefore, interaction of plasmons with electrons is described in the framework of quantum-mechanical approach. Such an interaction results in transformation of energy of induced currents into an energy of oscillations of two-dimensional layer, i.e. to their instability. In the work, increments of instabilities of such type are determined. The possibility to use obtained results for estimation of serviceability of radio products in conditions of effects of external electromagnetic radiation is shown.