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|Type:||Artigo de evento|
|Title:||Effects Of Applied Magnetic Fields On Direct And Indirect Excitons In Coupled Semiconductor Quantum Wells|
De Dios-Leyva M.
|Abstract:||We have investigated magnetic-field effects on the direct- and indirect-exciton dispersions and on the exciton effective mass in the plane perpendicular to the applied field, within the variational framework and effective-mass approximation, for coupled GaAs-(Ga, Al)As quantum wells. The simple hydrogen-like envelope wave function we have used provides the expected behavior for the exciton dispersion law in a wide range of the center-of-mass momenta, and leads to an analytical expression for the exciton effective mass. Theoretical results for the magnetic-field dependent exciton dispersion and effective mass are in quite good agreement with available experimental measurements. © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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