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J Phys Condens Matter. 2013 Jan 16;25(2):025801. doi: 10.1088/0953-8984/25/2/025801. Epub 2012 Nov 26.

Light-hole quantization in the optical response of ultra-wide GaAs/Al(x)Ga(1-x)As quantum wells.

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1
Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Russia. vicsol@issp.ac.ru

Abstract

Temperature-dependent reflectivity and photoluminescence spectra are studied for undoped ultra-wide 150 and 250 nm GaAs quantum wells. It is shown that spectral features previously attributed to a size quantization of the exciton motion in the z-direction coincide well with energies of quantized levels for light holes. Furthermore, optical spectra reveal very similar properties at temperatures above the exciton dissociation point.

PMID:
23178805
DOI:
10.1088/0953-8984/25/2/025801
[Indexed for MEDLINE]
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