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Overflow of a dipolar exciton trap at high magnetic fields

Dietl, S. ; Kowalik-Seidl, K. ; Schuh, D. ; Wegscheider, W. ; Holleitner, A. W. ; Wurstbauer, U.


We study laterally trapped dipolar exciton ensembles in coupled GaAs quantum wells at high magnetic fields in the Faraday configuration. In photoluminescence experiments, we identify three magnetic field regimes. At low fields, the exciton density is increased by a reduced charge carrier escape from the trap, and additionally, the excitons' emission energy is corrected by a positive diamagnetic ...


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