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 language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - 1997|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics