Local optical absorption by confined excitons in single and coupled quantum dots

Authors
Simserides, CD Hohenester, U Goldoni, G Molinari, E
Citation
Cd. Simserides et al., Local optical absorption by confined excitons in single and coupled quantum dots, PHYS ST S-B, 224(3), 2001, pp. 745-749
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI B-BASIC RESEARCH
ISSN journal
03701972 → ACNP
Volume
224
Issue
3
Year of publication
2001
Pages
745 - 749
Database
ISI
SICI code
0370-1972(200104)224:3<745:LOABCE>2.0.ZU;2-L
Abstract
We investigate optical near-field spectra of single and coupled semiconduct or quantum dots. An enhanced role for the Coulomb correlations is predicted , and it is shown that the spectra depend crucially on the spatial resoluti on of the "local" probe. The intensity of certain optical peaks as a functi on of the resolution exhibits an unexpected non-monotonic behavior, which i s identified as a fingerprint of Coulomb interactions in zero-dimensional n anostructures.