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Título : Magnetoabsorption spectra of intraexcitonic transitions in GaAs-(Ga,Al)As semiconductor quantum wells
Autor : Barticevic, Zdenka
Pacheco, Mónica
Duque Echeverri, Carlos Alberto
Oliveira, Luiz Eduardo
metadata.dc.subject.*: Magnetoabsorción
Espectros
Transiciones intraexcitonicas
Pozos cuánticos
Fecha de publicación : 2002
Editorial : AIP (American Institute of Physics) Press
Citación : Barticevic, Z., Pacheco, M., Duque Echeverri, C. A., & Oliveira, L. E. (2002). Magnetoabsorption spectra of intraexcitonic transitions in GaAs-(Ga,Al)As semiconductor quantum wells. Journal Of Applied Physics. 92(3), 1227-1231. DOI:10.1063/1.1489495
Resumen : ABSTRACT: We present a theoretical study, within the effective-mass approximation, of the magnetoabsorption spectra of intraexcitonic terahertz transitions of light-hole and heavy-hole confined magnetoexcitons in GaAs-~Ga,Al!As quantum wells. The semiconductor quantum wells are studied under magnetic fields applied in the growth direction of the semiconductor heterostructure. The various magnetoexciton states are obtained in the effective-mass approximation by an expansion of the exciton-envelope wave functions in terms of products of hole and electron quantum-well states with appropriate Gaussian functions for the various excitonic states. Intramagnetoexciton transitions are theoretically studied by exciting the allowed excitonic transitions with s1 ~or s2! far-infrared radiation circularly polarized in the plane of the GaAs-~Ga,Al!As quantum well. Theoretical results are obtained for the intramagnetoexciton transition energies and magneto-absorption spectra associated with excitations from 1s-like to 2p6 , and 3p6-like magnetoexciton states, and found in overall agreement with optically detected resonance measurements.
ISSN : 0021-8979
metadata.dc.identifier.doi: 10.1063/1.1489495
Aparece en las colecciones: CIEN (Centro de Investigaciones en Ciencias Exactas y Naturales)

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