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Type: Artigo de periódico
Title: Donor-related magneto-optical absorption spectra of GaAs-(Ga,Al)As quantum wells
Author: Barbosa, LHM
Latge, A
Oliveira, LE
deDiosLeyva, M
Abstract: The effects of applied magnetic fields on the optical absorption spectra associated with transitions from the Landau valence magnetic levels to shallow donor states in GaAs-(Ga, AI)As quantum wells are studied for magnetic fields applied perpendicular to the heterostructure interfaces. The donor-related magneto-absorption spectra are calculated within the effective-mass approximation, and with a minimization procedure for evaluating donor energies and envelope wave functions. We consider a homogeneous donor distribution in the well and analyse the theoretical impurity-related magneto-absorption spectra for various quantum well widths and applied magnetic fields. The magneto-absorption lineshapes present features clearly associated with transitions involving donor states and different valence Landau magnetic levels.
Country: Inglaterra
Editor: Iop Publishing Ltd
Rights: fechado
Identifier DOI: 10.1088/0953-8984/9/15/010
Date Issue: 1997
Appears in Collections:Unicamp - Artigos e Outros Documentos

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