MULTIMODE ASPECTS OF VIBRONIC INTERACTION IN OPTICAL-SPECTRA OF IMPURITY CRYSTALS

Citation
Av. Fedorov et al., MULTIMODE ASPECTS OF VIBRONIC INTERACTION IN OPTICAL-SPECTRA OF IMPURITY CRYSTALS, Physics reports, 248(6), 1994, pp. 369-404
Citations number
111
Categorie Soggetti
Physics
Journal title
ISSN journal
03701573
Volume
248
Issue
6
Year of publication
1994
Pages
369 - 404
Database
ISI
SICI code
0370-1573(1994)248:6<369:MAOVII>2.0.ZU;2-2
Abstract
The role of the multi-mode vibrational spectrum of crystals with struc tural defects in optical phenomena such as intracenter absorption and luminescence, internal photoeffect, and resonant Raman scattering is e xamined. A comparison is performed between the quasimolecular model an d those with more comprehensive account of the electron coupling with the quasicontinual vibrational spectrum. It is shown, that the multi-m ode character of the impurity crystal vibrational subsystem must be ta ken into consideration to interpret adequately the optical experiments . A review of theoretical and experimental results concerning this pro blem is presented.