%0 Journal Article
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%@nexthigherunit 8JMKD3MGPCW/3ESR3H2
%@archivingpolicy denypublisher denyfinaldraft
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%@usergroup banon
%@usergroup marciana
%@usergroup sergio
%3 inter-exciton.pdf
%B Physica Status Solidi A: Applied Research
%X The effects of the inter-exciton exchange interaction in the time evolution of the exciton luminescence intensity and polarization in III-V semiconductor quantum wells are investigated theoretically The luminescence dynamics in the resonant and high density excitation regime is simulated with a set of nonlinear rate equations for the occupation numbers of a finite set of exciton spin states. and studied as function of the polarization and intensity of the exciting pulse. The spin flip transitions are driven by both intra- and inter-exciton exchange interaction. Two contributions to the latter are included in the simulation, namely the spin mixing in the symmetrized biexciton state and the spin dependent free exciton-exciton scattering. It is found that the fast decay observed experimentally at sufficient high excitation intensities, in both luminescence intensity and polarization, is reproduced with reasonable values for the relaxation times only when both contributions to the inter-exciton exchange interaction are turned on.
%8 Mar.
%N 1
%T Inter-exciton exchange interaction and nonlinear luminescence polarization dynamics in III-V semiconductor quantum wells
%@secondarytype PRE PI
%K MATERIALS PHYSICS, Inter-exciton exchange interaction, Nonlinear luminescence, FÍSICA DE MATERIAIS, Interação de troca, Luminescência não-linear.
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%@group
%@group LAS-INPE-MCT-BR
%@secondarykey INPE-12825-PRE/8115
%@copyholder SID/SCD
%@issn 0031-8965
%2 sid.inpe.br/iris@1916/2005/04.08.16.45.49
%@affiliation Universidade São Franscisco (USF)
%@affiliation Instituto Nacional de Pesquisas Espaciais, Laboratorio Associado de Sensores e Materiais (INPE.LAS)
%@project MATCON: Física da matéria condensada / Spintronica e computação quantica
%P 447-452
%4 sid.inpe.br/iris@1916/2005/04.08.16.45
%D 2000
%V 178
%A Maialle, M. Z.,
%A Andrada e Siva, Erasmo Assumpção de,
%@dissemination PORTALCAPES
%@area FISMAT