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2008 | 114 | 5 | 1073-1077
Article title

Evidence of Singlet-Triplet Crossing in Photoluminescence of Positively Charged Excitons in GaAs Quantum Wells

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EN
Abstracts
EN
Positively charged excitons in a two-dimensional hole gas in symmetric and asymmetric GaAs/Ga_{1-x}Al_{x}As quantum wells are studied in polarization-resolved photoluminescence experiments in high magnetic fields B (up to 23 T) and low temperatures (down to 300 mK). The experiments are accompanied by numerical calculations of a real structure. The whole family of trions (the singlet and a pair of triplets) are observed. The Coulomb energies crossing of singlet and triplet is found: hidden in symmetric and visible in asymmetric structures.
Keywords
Contributors
author
  • Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
author
  • Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
author
  • Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
author
  • Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
author
  • Grenoble High Magnetic Field Laboratory, CNRS, 25 av. Martyrs, F-38042 Grenoble, France
author
  • Grenoble High Magnetic Field Laboratory, CNRS, 25 av. Martyrs, F-38042 Grenoble, France
author
  • Lehrstuhl fur Festkörperphysik, Ruhr Universität, Universitätstrasse 150, 44780 Bochum, Germany
author
  • Lehrstuhl fur Festkörperphysik, Ruhr Universität, Universitätstrasse 150, 44780 Bochum, Germany
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv114n512kz
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