• Media type: E-Article
  • Title: Wave‐Function Topology Effects on Charged Excitons in Type‐II InAs/GaAsSb Quantum Dots and Rings
  • Contributor: Llorens, José M.; Alén, Benito
  • imprint: Wiley, 2019
  • Published in: physica status solidi (RRL) – Rapid Research Letters
  • Language: English
  • DOI: 10.1002/pssr.201800314
  • ISSN: 1862-6254; 1862-6270
  • Keywords: Condensed Matter Physics ; General Materials Science
  • Origination:
  • Footnote:
  • Description: <jats:sec><jats:label /><jats:p>InAs self‐assembled quantum dots capped with GaAsSb exhibit type‐II band alignment and singly or doubly connected hole wave‐function topology depending on the thickness of the capping layer or the Sb concentration. A configuration interaction analysis of the excitons complexes <jats:italic>X</jats:italic><jats:sup>0</jats:sup>, <jats:italic>X</jats:italic><jats:sup>−1</jats:sup>, and <jats:italic>X</jats:italic><jats:sup>+1</jats:sup> for different overlayer thicknesses is presented. A characteristic double line structure of the <jats:italic>X</jats:italic><jats:sup>+1</jats:sup> recombination is predicted for the doubly connected topology. A hallmark is established to identify the optical Aharonov–Bohm transition in addition to the well‐known intensity fade‐out of the <jats:italic>X</jats:italic><jats:sup>0</jats:sup>.</jats:p></jats:sec>