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Type: Artigo de periódico
Title: Exciton diamagnetic shifts in GaAs-Ga1-xAlxAs quantum dots and ultrathin quantum wells
Author: Barticevic, Z
Pacheco, M
Duque, CA
Oliveira, LE
Abstract: A theoretical study of the growth-direction magnetic-field effects on the exciton photoluminescence peak energies in GaAs-Ga1-xAlxAs quantum-dot/ultrathin quantum-well systems is presented. Calculations are performed within the effective-mass approximation and taking into account nonparabolicity effects for both the conduction-band and valence-band effective masses. We use a simple 'QD + ultrathin QW' model heterostructure to mimic the actual physical system, and calculated results for the exciton diamagnetic shifts are found in overall agreement with recent experimental measurements.
Country: Inglaterra
Editor: Iop Publishing Ltd
Citation: Journal Of Physics-condensed Matter. Iop Publishing Ltd, v. 19, n. 21, 2007.
Rights: fechado
Identifier DOI: 10.1088/0953-8984/19/21/216224
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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