Forward Raman scattering in GaAs/AlAs superlattices: Study of optical phonon anisotropy

Citation
Da. Tenne et al., Forward Raman scattering in GaAs/AlAs superlattices: Study of optical phonon anisotropy, EUR PHY J B, 8(3), 1999, pp. 371-376
Citations number
25
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
EUROPEAN PHYSICAL JOURNAL B
ISSN journal
14346028 → ACNP
Volume
8
Issue
3
Year of publication
1999
Pages
371 - 376
Database
ISI
SICI code
1434-6028(199904)8:3<371:FRSIGS>2.0.ZU;2-J
Abstract
We present the forward Raman scattering study of zone-centre optical phonon anisotropy in short-period GaAs/AlAs superlattices. Experiments were perfo rmed on specially prepared superlattice structures having anti-reflection d ielectric coatings and removed substrates. The experimental data are compar ed with the angular dispersion of superlattice optical phonons calculated w ithin the dielectric susceptibility model. We have found a good agreement b etween the experimental data and the calculations taking into account inter face disorder.