Magneto-excitonic states in charge-tunable self-assembled quantum dots

C. Schulhauser, A. Högele, A. O. Govorov, R. J. Warburton, K. Karrai, J. M. Garcia, B. D. Gerardot, P. M. Petroff

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The luminescence spectroscopy of charge tunable self-assembled InAs quantum dots is reviewed. We discuss that for confined excitons charged with more than three electrons in excess the quantum dot state can be resonantly coupled to the two-dimensional continuum of electronic states of the wetting layer. This coupling manifests itself in a magnetic field and is triggered by photon emission. In contrast the neutral, singly and doubly charged exciton have optical spectra consistent with the artificial atom picture. © 2004 Published by Elsevier B.V.

Original languageEnglish
Pages (from-to)233-241
Number of pages9
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume25
Issue number2-3 SPEC.ISS.
DOIs
Publication statusPublished - Nov 2004

Keywords

  • Charged excitons
  • Magnetoluminescence
  • Semiconductor quantum dots
  • Single dot spectroscopy

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