Effect of vertical electric fields on exciton fine structure of GaAs natural quantum dots

S. Marcet, T. Kita, K. Ohtani, H. Ohno

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effect of vertical electric fields on the neutral exciton of GaAs "natural" quantum dots is investigated. A Stark effect with a quadratic field dependence up to 2 meV was observed and reveals a displacement of the excitonic wave function. The luminescencequenching limits the applied electric field range. No significative change on the fine structure splitting of the neutral exciton has been observed, suggesting that the lateral potential induced by the vertical electric field is too weak to modify the in-plane anisotropy of the exciton wave function.

Original languageEnglish
Pages (from-to)2069-2071
Number of pages3
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume40
Issue number6
DOIs
Publication statusPublished - 2008 Apr 1

Keywords

  • Fine structure splitting
  • GaAs
  • Quantum dots
  • Spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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