Search results for "Ionized impurity scattering"

Low temperature mobilities of 2-D electrons in indium selenide: Neutral and ionized impurity scattering

1992

Abstract Low temperature mobility of 2-D electrons in indium selenide is calculated, taking into account neutral and ionized impurity scattering. Two-dimensional electric subbands are originated due to quantum size effects, at both sides of thin ϵ-polytype layers, separated by two stacking faults from the bulk γ-InSe. Ionized impurities are in the ϵ-layer and then, spatially separated from 2-D electrons. Neutral impurities are adsorbed to stacking faults in the ϵ-γ interface. A relaxation time for dipole-like neutral impurity scattering is deduced. Calculated mobilities are compared to previous experimental results and the areal concentration of the neutral impurities is so estimated. The i…