Abstract
The rate of hot-electron energy loss to the lattice in polar semiconductors is studied within a two-temperature model. We call attention to the role of the internal thermalization of the LO-phonon system in implementing this model and in establishing the concept of electron energy loss to phonons. With the help of the Feynman diagramatic technique for the Keldysh closed-time-path Green's function, we have derived a formula for the electron-energy-loss rate, taking account of contributions from all orders of the electron-phonon intervention and including the hot-phonon effect
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