Interacting many-body systems in quantum wells: Evidence for exciton-trion-electron correlations

Abstract

We report on the nonlinear optical dynamical properties of excitonic complexes in CdTe modulation-doped quantum wells, due to many-body interactions among excitons, trions and electrons. These were studied by time and spectrally resolved pump-probe experiments. The results reveal that the nonlinearities induced by trions differ from those induced by excitons, and in addition they are mutually correlated. We propose that the main source of these subtle differences comes from the Pauli exclusion-principle through phase-space filling and short-range fermion exchange.

arXiv comment5 pages, 4 figures. accepted for publications in Phys. Rev. B

References in corpus (2)

• Optical RKKY Interaction between Charged Semiconductor Quantum Dots
• Spin-based optical quantum gates via Pauli blocking in semiconductor quantum dots

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• Screening by composite charged particles: the case of quantum well trions
• Time-dependent density-matrix functional theory for trion excitations: application to monolayer MoS2