laboratoire pierre aigrain
électronique et photonique quantiques
laboratoire pierre aigrain

Séminaire 3 Mai 2010

Marco ABBARCHI<br class='autobr' />National Institute for Material Science 1-1 Namiki, Tsukuba 305-0044, Japan
Optical properties of excitonic complexes in self-assembled strain-free quantum dots

In this seminar I will show the results of photoluminescence spectroscopy on self-assembled GaAs/AlGaAs quantum dots (QDs) grown by droplet epitaxy. The main topics I will touch regard the excitonic recombination in single QDs and are :
i) magneto optical measurements for the investigation of the fine structure of excitons, the Landè g factor and the diamagnetic shift g2 [1,2]
ii) experimental and theoretical study of the binding energy of different excitonic complexe[3].

[1] M. Abbarchi et al., Phys. Rev. B 78, 125321 (2008)
[2] M. Abbarchi et al., Phys. Rev. B 81, 035334 (2010)
[3] M. Abbarchi et al., in progress