Deformation Electron-Phonon Coupling in Disordered Semiconductors and Nanostructures

Details Deformation Electron-Phonon Coupling in Disordered Semiconductors and Nanostructures Deformation Electron-Phonon Coupling in Disordered Semiconductors and Nanostructures

2005-01-13

arxiv.org/abs/cond-mat/0501326v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.94.136602

We study the electron-phonon relaxation (dephasing) rate in disordered semiconductors and low-dimensional structures. The relaxation is determined by the interference of electron scattering via the deformation potential and elastic electron scattering from impurities and defects. We have found that in contrast to the destructive interference in metals, which results in the Pippard ineffectiveness condition for the electron-phonon interaction, the interference in semiconducting structures substantially enhances the effective electron-phonon coupling. The obtained results provide an explanation to energy relaxation in silicon structures.

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