Effect of high frequency field on the transport properties of superlattice

Abstract

Theoretical study of the transport properties of semiconductor superlattice (SL) in the presence of external electric field E{t) has been investigated with the help of Boltz mann's equation. The model adopted agrees fairly well with experimental work as well as Monte Carlo simulation. Among the phenomena observed are the induced self transparency, absolute negative conductivity and the negative differential conductivity. In the case of negative differential conductivity (NDC) it is observed that it does also occur under the a.c and d.c electric field but appears only when UT<1 . It does appear in the vicinity where the d.c field Eo is equal to the amplitude of the a.c field E\ and the peak decreases with an increase in E\