EFFECT OF NONEQUILIBRIUM PLASMONS ON ELECTRON-PLASMON INTERACTIONS INSEMICONDUCTORS

The effect of nonequilibrium plasmons on the steady-state high-de-fiel d response of electron gas in n-GaAs is numerically studied via iterat ive procedure using the Monte Carlo simulation algorithm for hot-elect ron transport and the Boltzmann equation for plasmons. The electron po pulation inversion in wave vector space along the electric field is pr edicted to exist for fields in excess of about 10 kV/cm. The plasmon d istribution disturbances leave the steady-state velocity at low fields almost unaffected but lead to reduction of that up to 10% for fields around and above the maximum of the velocity-field characteristics.