Phonon contribution to electronic transport properties of semiconductors

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Abstract
Electron-phonon interaction in semiconductors is described by means of a realistic Hamiltonian within a localised scheme. With this simple method, the authors compute the phonon contribution to the self-energy of valence electrons. Their results suggest a tractable model to study this type of problem in systems without long-range order. For perfect crystals, electron-phonon coupling produces a significant variation of the effective mass. Finally, the lifetime of the quasiparticles is analysed as a function of energy and temperature.