Abstract
Scattering of phonons at shallow bound states of D− and A+ centers in semiconductors can lead to a neutralization of these states and thereby to an increase of mobile charge carriers in the conduction or valence band, respectively, which causes an increase of the electrical conductivity We investigate the coupling of phonons to D− and A+ states in semiconductors and calculate the phonon-induced conductivity in dependence of the phonon energy. It turns out that the results are very sensitive to an applied uniaxial stress field. This is in agreement with experimental observations.
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