Effect of Screening on Piezoelectric Scattering Rates of Free Electrons in 2DEG

A. K. Ghorai

Abstract: The piezoelectric scattering rate of free electrons is investigated in a degenerate two-dimensional elec?tron gas (2DEG) formed in semiconductor interface giving due account to the effect of screening of the free carriers and the true phonon distribution which are indeed dominant features at low lat?tice temperatures. Numerical calculations are made to observe the effect in GaAs surface layer.

Keywords: 2DEG, Piezoelectric, Phonon, Scattering, Screening