Binding of quasi-two-dimensional biexcitons

D. Birkedal, Jai Singh, V. G. Lyssenko, J. Erland, J. M. Hvam

Research output: Contribution to journalArticlepeer-review

181 Citations (Scopus)

Abstract

Biexciton binding in GaAs quantum wells has been investigated for a range of well thicknesses (80-160 Å) with spectrally resolved photoluminescence and transient degenerate four-wave mixing. Both light and heavy hole biexcitons are observed. The ratio of the binding energy of the heavy hole biexciton to that of the heavy hole exciton is found to be ≈0.2, and nearly independent of well width over the investigated range. A new theoretical calculation agrees very well with the experimental ratio. This ratio is larger than predicted by Hayne’s rule for three-dimensional biexcitons.

Original languageEnglish
Pages (from-to)672-675
Number of pages4
JournalPhysical Review Letters
Volume76
Issue number4
DOIs
Publication statusPublished - 1996
Externally publishedYes

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