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

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  • M.T. Portella-Oberli, École Polytechnique Fédérale de Lausanne
  • ,
  • Victoria Birkedal
  • J.H. Berney, École Polytechnique Fédérale de Lausanne
  • ,
  • B. Deveaud, École Polytechnique Fédérale de Lausanne
  • ,
  • M. Kutrowski, Institute of Physics of the Polish Academy of Sciences
  • ,
  • T. Wojtowicz, Institute of Physics of the Polish Academy of Sciences

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.

Original languageEnglish
Article number235311
JournalPhysical Review B
Volume69
Issue23
Pages (from-to)235311 1-5
Number of pages5
ISSN2469-9950
DOIs
Publication statusPublished - 2004
Externally publishedYes

    Research areas

  • NEGATIVELY CHARGED EXCITONS, BLUE SHIFT, SEMICONDUCTORS, DEPENDENCE

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