Effect of long-range Coulomb interaction on shot-noise suppression in ballistic transport

T. Gonzalez, O. M. Bulashenko, J. Mateos, D. Pardo, L. Reggiani

Published 1997-03-11, updated 1997-10-06Version 2

We present a microscopic analysis of shot-noise suppression due to long-range Coulomb interaction in semiconductor devices under ballistic transport conditions. An ensemble Monte Carlo simulator self-consistently coupled with a Poisson solver is used for the calculations. A wide range of injection-rate densities leading to different degrees of suppression is investigated. A sharp tendency of noise suppression at increasing injection densities is found to scale with a dimensionless Debye length related to the importance of space-charge effects in the structure.