Artículos de revistas
A PHOTOMODULATED SPECTROSCOPY STUDY OF INXGA1-XAS/GAAS SUPERLATTICES AND QUANTUM-WELLS
Registro en:
Journal Of Applied Physics. Amer Inst Physics, v. 69, n. 11, n. 7836, n. 7843, 1991.
0021-8979
WOS:A1991FP40100070
10.1063/1.347515
Autor
VAZQUEZLOPEZ, C
RIBEIRO, E
CERDEIRA, F
MOTISUKE, P
SACILOTTI, MA
ROTH, AP
Institución
Resumen
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. 69 11 7836 7843