Open AccessAN INTEGRAL OPERATOR METHOD TO STUDY THE PROBLEM OF EXCITON-PHONON INTERACTION
Author(s) -
Hang Zheng,
Junxin Fang
Publication year - 1986
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.35.1029
Subject(s) - exciton , renormalization , phonon , physics , operator (biology) , degenerate energy levels , anisotropy , valence (chemistry) , quantum mechanics , condensed matter physics , chemistry , biochemistry , repressor , transcription factor , gene
In this article, taking the exciton and polar-phonon interaction as an example, we introduce an integral operator to deal with the dynamical problem of exciton-phonon interaction. Compared with the methods of earlier arthors, our method has some characteristics : besides the binding energies which agree with the measured data of experiments, the lifetime of excitons, the renormalization factors of translational masses, and the relation between these quantities and temperature, are obtained simultaneously. This method may be used not only for the Is state, but also the states higher than Is state. Furthermore, this method may be extended to the anisotropic case and the case of degenerate valence band conveniently.