期刊
EUROPHYSICS LETTERS
卷 73, 期 6, 页码 920-926出版社
EDP SCIENCES S A
DOI: 10.1209/epl/i2006-10002-4
关键词
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In order to explain and model the inner ring in photoluminescence (PL) patterns of indirect excitons in GaAs/AlGaAs quantum wells (QWs), we develop a microscopic approach formulated in terms of coupled nonlinear equations for the diffusion, thermalization and optical decay of the particles. The origin of the inner ring is unambiguously identified: it is due to cooling of indirect excitons in their propagation from the excitation spot.
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