Electron temperature and cooling of 2D hot electron gas in deep quantum wells

The non-equilibrium kinetics of the two-dimensional electron gas in a deep quantum well is studied for qualitatively different physical situations, wh ich are distinguished by the different strength of the electron-electron in teraction. The electron temperature and the electron mobility dependences o n the electric held, electron density, and the lattice temperature are pres ented. It is shown that at high electron density the electron temperature i s a non-monotonous function of the electric held, which has a segment where the electron temperature decreases with increasing electric field. We also predict a new physical effect - the absolute cooling of the electrons wher eby the electron temperature of the two-dimensional electron gas is lower t han the lattice temperature. (C) 1999 Elsevier Science B.V. All rights rese rved.