Stability of optically active charged excitons in quasi-two-dimensional systems

James R. Chapman, Neil F. Johnson, V. Nikos Nicopoulos

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


A negatively charged quasi-two-dimensional exciton ((Formula presented)) is studied numerically in the presence of a uniform perpendicular B field. Various quasi-two-dimensional geometries are studied. The charge distribution of the (Formula presented) parallel to the B field is found to be crucial in determining the stability of the optically active (Formula presented) and hence its photoluminescence signature. The theory provides a quantitative explanation of recent experimental results obtained for a GaAs quantum well. Effects are found that cannot be described within a lowest-Landau-level approximation.

Original languageEnglish (US)
Pages (from-to)R10221-R10224
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number16
StatePublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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