Intershell Exchange Interaction in Charged GaAlAs Quantum Dots

• Authors: M. Molas , A. Nicolet , M. Potemski , A. Babiński
• Languages of publication: EN

Abstracts

EN

Optical anisotropy of charged excitons and biexcitons related to the single-particle s- and p-shell emission in GaAlAs/AlAs quantum dots is investigated. The polarization-dependence and time-resolved micro-photoluminescence measurements were performed. Cross-correlation measurements were used to identify the ladder of excitonic states and allowed us to show two cascade pathways, including the spin singlet and triplet states of charged excitons and biexcitons. The fine structure of the studied states is described and analysed in terms of electron-electron, hole-hole, and electron-hole exchange interactions.

Keywords

EN

78.67.Hc; 71.35.-y; 78.55.Cr; 71.70.Gm

Discipline

• 78.55.Cr: III-V semiconductors
• 78.67.Hc: Quantum dots
• 71.70.Gm: Exchange interactions
• 71.35.-y: Excitons and related phenomena

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 5
• Pages: 785-787

Dates

published

2013-11

Contributors

author

M. Molas

• Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warszawa, Poland
• Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA 25, av. des Martyrs, 38042 Grenoble, France

author

A. Nicolet

• Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA 25, av. des Martyrs, 38042 Grenoble, France

author

M. Potemski

• Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA 25, av. des Martyrs, 38042 Grenoble, France

author

A. Babiński

• Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warszawa, Poland

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Identifiers

DOI

10.12693/APhysPolA.124.785