Gindele, F., Hild, K., Langbein, Wolfgang ORCID: https://orcid.org/0000-0001-9786-1023 and Woggon, U. 1999. Phonon interaction of single excitons and biexcitons. Physical Review B 60 (4) , R2157-R2160. 10.1103/PhysRevB.60.R2157 |
Abstract
The exciton-phonon coupling of a single zero-dimensional exciton is studied in epitaxially grown CdSe/Zn1−xCdxSe quantum dot structures by analyzing its linewidth and phonon-assisted recombination. The single excitons do not couple to only a single phonon mode, but to a distribution of phonons, here consisting of the zone-center ZnSe longitudinal optic (LO) phonon and of mixed modes with an energy statistics centered between the ZnSe and CdSe LO phonon. Both exciton and corresponding biexciton reveal LO-phonon replica intensities of ∼3% of the respective zero-phonon emission. These similar LO-phonon coupling strengths are evidence of a reduced polarity of the exciton states within the biexciton as the result of exciton-exciton correlation.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QC Physics |
Publisher: | American Physical Society |
ISSN: | 0163-1829 |
Last Modified: | 28 Oct 2022 08:41 |
URI: | https://orca.cardiff.ac.uk/id/eprint/71729 |
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