Excitonic energy shell structure of self-assembled InGaAs/GaAs quantum dots

S. Raymond*, S. Studenikin, A. Sachrajda, Z. Wasilewski, Shun-Jen Cheng, W. Sheng, P. Hawrylak, A. Babinski, M. Potemski, G. Ortner, M. Bayer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

108 Scopus citations

Abstract

The excitonic energy shell structure of self-assembled InGaAs/GaAs quantum dots (QD) was demonstrated. An unprecedently well resolved Fock-Darwin spectrum was observed by performing optical spectroscopy of highly homogeneous quantum dot arrays in ultrahigh magnetic fields. The existence of up to four degenerate electronic shells was demonstrated where the magnetic field lifts the initial degeneracies. The resulting level shifting and crossing pattern showed evidence of many-body effects like the mixing of configurations and exciton condensation at the resonances.

Original languageEnglish
Article number188901
JournalPhysical Review Letters
Volume92
Issue number18
DOIs
StatePublished - 7 May 2004

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