RAMAN SCATTERING STUDY OF ACOUSTICAL AND OPTICAL FOLDED MODES IN GaAS/GaAlAs SUPERLATTICES

1 April 1984

journal article
Published by EDP Sciences in Le Journal de Physique Colloques

Vol. 45 (C5) , C5-145
https://doi.org/10.1051/jphyscol:1984521

Abstract

We report the first Raman scattering determination of large parts of the dispersion curves of folded acoustical modes in large period GaAs / GaAlAs superlattices and the first unambiguous observation of a folded optical mode. The analysis of the acoustical dispersion curves gives informations on the lattice dynamics of the alloy. A Kronig-Penney type model of the whole phonon dispersion curves of a superlattice is presented

Keywords

RAMAN SCATTERING
ACOUSTICAL
FOLDED MODES
SCATTERING STUDY
OPTICAL
SUPERLATTICES
GAAS/GAALAS

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