Many-Exciton Complexes in Self-Assembled Quantum Dots

• Authors: A. Wójs , P. Hawrylak , L. Jacak
• Languages of publication: EN

Abstracts

EN

The system of interacting electrons and holes confined in a lens-shaped InGaAs self-assembled dot is studied using exact diagonalization techniques. The single-particle energy spectrum of self-assembled dot is well approximated by that of a quasi-two-dimensional atom with parabolic lateral confinement. The electronic shell structure of self-assembled dot is responsible for a remarkable dependence of the absorption/emission spectrum on the number of excitons. This is explained in terms of hidden symmetries leading to a formation of coherent many-exciton states of weakly interacting excitons and bi-excitons.

Keywords

EN

73.20.Dx; 71.45.Gm; 78.66.Fd

Discipline

• 78.66.Fd: III-V semiconductors
• 71.45.Gm: Exchange, correlation, dielectric and magnetic response functions, plasmons

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 90
• Issue: 5
• Pages: 1108-1112

Dates

published

1996-11

Contributors

author

A. Wójs

• Institute of Physics, Technical University of Wrocław, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

P. Hawrylak

• Institute for Microstructural Sciences, National Research Council of Canada, Ottawa, K1A 0R6, Canada

author

L. Jacak

• Institute of Physics, Technical University of Wrocław, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Identifiers

DOI

10.12693/APhysPolA.90.1108