Optical properties of an interacting large polaron gas

Authors
Cataudella, V De Filippis, G Iadonisi, G
Citation
V. Cataudella et al., Optical properties of an interacting large polaron gas, EUR PHY J B, 12(1), 1999, pp. 17-22
Citations number
42
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
EUROPEAN PHYSICAL JOURNAL B
ISSN journal
14346028 → ACNP
Volume
12
Issue
1
Year of publication
1999
Pages
17 - 22
Database
ISI
SICI code
1434-6028(199911)12:1<17:OPOAIL>2.0.ZU;2-1
Abstract
The normal state conductivity, sigma(omega), of a system of interacting lar ge polarons is calculated within the Random Phase approximation and some nu merical results are presented. The behaviour of the optical absorption as a function of the charge carrier density and of the temperature is analyzed for different values of the electron-phonon coupling constant. It is shown that sigma(omega) exhibits features similar to those observed in the infrar ed spectra of the cuprates.