RESONANT-FREQUENCY OF IMPURITY POLARON IN A QUANTUM-WELL

Authors
WEI BH YU KW GU SW
Citation
Bh. Wei et al., RESONANT-FREQUENCY OF IMPURITY POLARON IN A QUANTUM-WELL, Communications in Theoretical Physics, 21(4), 1994, pp. 391-396
Citations number
16
Categorie Soggetti
Physics
Journal title
Communications in Theoretical Physics → ACNP
ISSN journal
02536102
Volume
21
Issue
4
Year of publication
1994
Pages
391 - 396
Database
ISI
SICI code
0253-6102(1994)21:4<391:ROIPIA>2.0.ZU;2-Q
Abstract
It is shown that the resonant frequency omega(c) of a magnetopolaron bound to a Coulomb impurity in a GaAs/Ga1-xAlxAs quantum well is lower than that of longitudinal optical (LO) phonons owing to the effect of the Coulomb potential. Using MacDonald method to treat the Coulomb po tential we come to the conclusion that omega(c) is really below the f requency of LO phonons but not ''pinning'' at a frequency near that of TO phonons.