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Laboratoire Pierre Aigrain

Home page > Seminars > 2010 > Séminaire 3 Mai 2010

Seminar May 3 2010

Optical properties of excitonic complexes in self-assembled strain-free quantum dots

Marco ABBARCHI National Institute for Material Science 1-1 Namiki, Tsukuba 305-0044, Japan

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