POLAR OPTICAL PHONONS AT SEMICONDUCTOR INTERFACES

Authors
CHUBYKALO A VELASCO VR GARCIAMOLINER F
Citation
A. Chubykalo et al., POLAR OPTICAL PHONONS AT SEMICONDUCTOR INTERFACES, Surface science, 319(1-2), 1994, pp. 184-192
Citations number
39
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
319
Issue
1-2
Year of publication
1994
Pages
184 - 192
Database
ISI
SICI code
0039-6028(1994)319:1-2<184:POPASI>2.0.ZU;2-T
Abstract
We study long wave polar optical modes at semiconductor surfaces (GaAs ) and interfaces (GaAs/ALAs). We have considered also the cases in whi ch the surface or interface is kept at a fixed electrostatic potential . The spectrum of excitations then shows significant differences. The existence of localized and resonant modes has been obtained by studyin g the spectral strength through the surface Green function matching (S GFM) method.