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Excitons in {311} oriented superlattices: optical anisotropies

AuthorsArmelles Reig, Gaspar CSIC ORCID; Castrillo, Pedro; Domínguez, P. S.; González Sotos, Luisa; Ruiz, A.; Contreras-Solorio, D. A.; Velasco, V. R. CSIC ORCID; García-Moliner, F.
Issue Date1993
PublisherEDP Sciences
CitationJournal de Physique IV 3(C5): 283-287 (1993)
AbstractThe optical response of excitons in (311) oriented GaAs/AlAs superlattices grown by atomic layer molecular beam epitaxy at low substrate temperature is studied by piezoreflectance. Several transitions are detected showing heavy hole and light hole character. The heavy hole transitions are more polarized along the [(-2)33] direction whereas the light hole ones are more polarized along the [01(-1)] direction. According to the calculation based on an empirical tight binding model, the observed optical anisotropy is related to the different components of the superlatices valence band wave functions.
Description4 páginas, 2 figuras, 1 tabla.-- Comunicación oral presentada a la 3ª International Conference on Optics and Excitons in Confined Systems celbrada en Montpellier (Francia/1993).
Publisher version (URL)http://dx.doi.org/10.1051/jp4:1993556
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(ICMM) Artículos
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