Showing papers by "University of Antwerp published in 1969"
TL;DR: In this paper, the absorption of light by free continuum polarons is treated in the framework of the Landau-Pekar approach which for this problem is not restricted to strong coupling but gives at least the qualitative behavior for intermediate coupling.
Abstract: The absorption of light by free continuum polarons is treated in the framework of the Landau-Pekar approach which for this problem is not restricted to strong coupling but gives at least the qualitative behavior for intermediate coupling ($\ensuremath{\alpha}\ensuremath{\approx}3 \mathrm{to} 6$). The absorption curve consists of a relatively narrow zero-phonon peak and a broad sideband showing a multiphonon structure. The zero- and one-phonon contributions and the lowenergy part of the two-phonon contribution have been evaluated numerically.
78 citations
TL;DR: In this article, the absorption spectra of bound continuum polarons were calculated taking into account phonon dispersion and the finite lifetime of phonons, and a frequency shift of the emitted L.O. phonons was predicted.
13 citations