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2004 | 106 | 3 | 423-434
Article title

Many-Body Interaction Evidenced through Exciton-Trion-Electron Correlated Dynamics

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EN
Abstracts
EN
Interactions among excitons, trions, and electrons are studied in CdTe modulation-doped quantum wells. These many-body interactions are investigated through the nonlinear dynamical properties in the excitonic complexes using time and spectrally resolved pump and probe techniques. This study is performed as a function of temperature and densities of excitons, trions, and electrons. The results reveal that the nonlinearities induced by trions differ from those induced by excitons and moreover they are mutually correlated. The correlated behavior of excitons and trions manifests itself by crossed trion-exciton effects. We propose that the main source of these correlations is due to the presence of electrons in the quantum well and that its physical origin is the Pauli exclusion-principle. We find that, at 5 K, trions are formed from excitons within 10 ps; at 20 K a thermal equilibrium is reached within 5 ps.
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Year
Volume
106
Issue
3
Pages
423-434
Physical description
Dates
published
2004-09
received
2004-06-10
Contributors
  • Institut de Photonique et d'Electronique Quantique, Ecole Polytechnique Fèdèrale de Lausanne (EPFL), 1015 Lausanne, Switzerland
author
  • Institut de Photonique et d'Electronique Quantique, Ecole Polytechnique Fèdèrale de Lausanne (EPFL), 1015 Lausanne, Switzerland
author
  • Institut de Photonique et d'Electronique Quantique, Ecole Polytechnique Fèdèrale de Lausanne (EPFL), 1015 Lausanne, Switzerland
author
  • IQUEST, University of California, Santa Barbara, Ca 93106, USA
author
  • Institute of Physics, Polish Academy of Science, al. Lotnikow 32/46, 02-668 Warsaw, Poland
author
  • Institute of Physics, Polish Academy of Science, al. Lotnikow 32/46, 02-668 Warsaw, Poland
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv106n313kz
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