MICROWAVE FLUCTUATIONS IN ELECTRON GAS WITH PAIR COLLISIONS

Abstract

The paper overviews recent progress in the field of hot-electron microwave noise and fluctuations with an emphasis on contribution due to inter-electron collisions that are inevitable in doped semi-conductors at a relatively high density of mobile electrons. A special attention is paid to the problem of hot-electron diffusion in the range of electric fields where inter-electron collisions are important and Price's relation connecting diffusion and noise characteristics is not necessarily valid. The basic and up-to-date information is presented on methods and advances in the field where combined analytic and Monte Carlo methods of investigation are indispensable while seeking coherent understanding of experimental results.