CONSERVATION EQUATIONS FOR HOT CARRIERS .2. DYNAMIC FEATURES

The general dynamic features of the velocity and energy balance equati ons are investigated. For the small-signal response an analytical theo ry based on the linear response correlation functions is developed. Fo r the nonlinear and large-signal response the direct numerical solving of the balance equations has been used. For both responses good agree ment with the Monte Carlo simulation of the small- and large-signal ch aracteristics of hot electrons in n-InP are obtained. The eigenvalue s pectrum for hot electrons in n-InP is analyzed using the analytical co nsideration of the balance equations. The minimum frequency of the int rinsic relaxation processes of the hot carrier system is shown to be a bout 5-10 THz at high electric fields E greater-than-or-equal-to 30 kV /cm. Possibilities of using of this high frequency in the high-speed d evices are discussed.