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Type: Artigo de periódico
Title: A Photomodulated Spectroscopy Study Of Inxga1-xas/ Gaas Superlattices And Quantum Wells
Author: Vazquez-Lopez C.
Ribeiro E.
Cerdeira F.
Motisuke P.
Sacilotti M.A.
Roth A.P.
Abstract: We present here a detailed study of photomodulated transmission and reflectivity at room and liquid-nitrogen temperatures of a series of In xGa1-xAs/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.
Rights: aberto
Identifier DOI: 10.1063/1.347515
Date Issue: 1991
Appears in Collections:Unicamp - Artigos e Outros Documentos

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