Abstract
The room temperature reflectivity spectra of trigonal Te and Se have been fit using a harmonic oscillator formalism. The effective charge associated with the infra-red active lattice modes is high (∼ 0.15 e to 2.2 e) and is attributed entirely to charge redistribution effects. A calculation of the polaron coupling constants for Te and Se indicates that polar mode scattering is important in room temperature transport phenomena.
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