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

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

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A negatively charged quasi-two-dimensional exciton (X-) is studied numerically in the presence of a uniform perpendicular B field. Various quasi-two-dimensional geometries are studied. The charge distribution of the X- parallel to the B field is found to be crucial in determining the stability of the optically active X- 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)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume55
Issue number16
StatePublished - Apr 15 1997
Externally publishedYes

Fingerprint

Excitons
charge distribution
excitons
signatures
quantum wells
photoluminescence
Charge distribution
geometry
approximation
Semiconductor quantum wells
Photoluminescence
Geometry
LDS 751
gallium arsenide

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Stability of optically active charged excitons in quasi-two-dimensional systems. / Chapman, James R.; Johnson, Neil F; Nicopoulos, V. Nikos.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 55, No. 16, 15.04.1997.

Research output: Contribution to journalArticle

Chapman, James R. ; Johnson, Neil F ; Nicopoulos, V. Nikos. / Stability of optically active charged excitons in quasi-two-dimensional systems. In: Physical Review B - Condensed Matter and Materials Physics. 1997 ; Vol. 55, No. 16.
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