Band-Edge Exciton Fine Structure of Single CdSe-ZnS Nanocrystals in External Magnetic Fields
Language
en
Article de revue
This item was published in
Physical Review Letters. 2010-10-08, vol. 105, p. 157402
American Physical Society
English Abstract
We report a spectroscopic study of the two lowest-energy exciton levels of individual CdSe-ZnS nanocrystals under applied magnetic fields. Field-induced coupling between the bright and the dark excitonic states is directly ...Read more >
We report a spectroscopic study of the two lowest-energy exciton levels of individual CdSe-ZnS nanocrystals under applied magnetic fields. Field-induced coupling between the bright and the dark excitonic states is directly observed in the low-temperature photoluminescence spectrum and decay and allows the determination of the angle between the nanocrystal c axis and the field. Orientation-dependent Zeeman splittings of the dark and bright exciton sublevels are measured and provide the corresponding exciton Landé factors, as well as spin-flip relaxation rates between Zeeman sublevels.Read less <
English Keywords
single nanocrystals
exciton fine structure
Zeeman splittings
ANR Project
PROtocoles quantiques utilisant des Sources à Photons unIQues - ANR-06-NANO-0041
Origin
Hal imported