INFLUENCE OF HOT PHONONS ON ELECTRONIC NOISE IN GAAS

We present a Monte Carlo investigation of the influence of the nonequi librium phonon population on second-order transport properties in GaAs . We calculate the velocity and energy autocorrelation functions and t he velocity-energy cross-correlation functions, both for the case with and without phonon perturbation. By comparing the results, we find si gnificant modifications in the correlation functions and consequently in the equivalent noise temperature due to the presence of the nonequi librium phonons.