ASPECTS OF ELECTRON-PHONON COUPLING IN MIXED MOLECULAR SYSTEMS
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Date
1972
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Publisher
Ohio State University
Abstract
It is frequently observed that the spectral intensity distributions of the one-phonon spectra in the low temperature absorption and fluorescence spectra of an impurity in a host crystal are significantly different. A theoretical model for interpreting such a breakdown of mirror symmetry is presented. Out of the treatment a criterion emerges for determining when the quadratic coupling contribution to the zerophonon bandwidth, for a given linear coupling strength, is expected to be minimal. New expressions for the temperature dependence of the zero-phonon band position and width are presented and discussed in terms of available experimental data.
Description
Author Institution: Department of chemistry and Ames Laboratory USAEC, Iowa State University Ames