Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/76625
Type: Artigo de periódico
Title: A PHOTOMODULATED SPECTROSCOPY STUDY OF INXGA1-XAS/GAAS SUPERLATTICES AND QUANTUM-WELLS
Author: VAZQUEZLOPEZ, C
RIBEIRO, E
CERDEIRA, F
MOTISUKE, P
SACILOTTI, MA
ROTH, AP
Abstract: We present here a detailed study of photomodulated transmission and reflectivity at room and liquid-nitrogen temperatures of a series of In(x)Ga(1-x)As/GaAs superlattices and a single quantum well. Our samples span a variety of alloy compositions and quantum-well widths. We compare the results of our measurements with the predictions of an envelope-function calculation, which includes wave-vector dependence of the minibands. This comparison allows identification of several spectral features unmistakably arising from miniband dispersion. Also, accurate determination is made of the band-offset parameter, whose value is discussed in the context of those obtained by other authors.
Editor: Amer Inst Physics
Rights: aberto
Identifier DOI: 10.1063/1.347515
Date Issue: 1991
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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