Origin of the Inner Ring in Photoluminescence Patterns of Quantum Well Excitons
CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF PHYSICS
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In order to explain and model the inner ring in photoluminescence PL patterns of indirect excitons in GaAsAlGaAs 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.
- Quantum Theory and Relativity