KIAM Main page Web Library  •  Publication Searh  Русский 
Publication

KIAM Preprint № 104, Moscow, 2020
Authors: Lakhno V. D.
Translational-invariant excitons
Abstract:
Large-radius excitons in polar crystals are considered. It is shown that translation invariant description of excitons interacting with a phonon field leads to a nonzero contribution of phonons into the exciton ground state energy only in the case of weak or intermediate electron-phonon coupling. A conclusion is made that self-trapped excitons cannot exist in the limit of strong coupling. Peculiarities of absorption and emission spectra of translation invariant excitons in a phonon field are discussed. Conditions when the hydrogen-like exciton model remains valid in the case of electron-phonon interaction are found.
Keywords:
bose-condensate, electron-phonon interaction, hydrogen-like model, polaron
Publication language: russian,  pages: 14
Research direction:
Mathematical modelling in actual problems of science and technics
Russian source text:
Export link to publication in format:   RIS    BibTeX
View statistics (updated once a day)
over the last 30 days — 1 (+0), total hit from 15.12.2020 — 124
About authors:
  • Lakhno Victor Dmitrievich,  orcid.org/0000-0001-9224-769XKIAM RAS