Dresden 2020 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 64: Poster II
HL 64.36: Poster
Thursday, March 19, 2020, 10:00–13:00, P1A
Multi-particle theory of magneto-optical properties of GaAs/AlGaAs quantum dots — •Diana Csontosová1,2, Armando Rastelli3, and Petr Klenovský1,2,4 — 1Department of Condensed Matter Physics, Faculty of Science, Masaryk University, Kotlářská 267/2, 61137 Brno, Czech Republic — 2Czech Metrology Institute, Okružní 31, 63800 Brno, Czech Republic — 3Institute of Semiconductor and Solid State Physics, Johannes Kepler University Linz, Altenbergerstr. 69, 4040 Linz, Austria — 4Central European Institute of Technology, Masaryk University, Kamenice 753/5, 62500 Brno, Czech Republic
We have theoretically studied the size effect of GaAs/AlGaAs quantum dots on magneto-optical properties of neutral excitonic states. We employed a combination of the envelope function approximation based on 8-band k· p theory and the method of configuration interaction similar to Ref [1]. The magnetic field was applied in the growth direction. The results of our calculations are in very good agreement with available experimental data. [2] By comparing the results of single- and multi-particle calculations, we find that correlations play crucial role on the magneto-optical properties of our dots.
[1] Huber, D., et al., arXiv:1909.04906 (2019).
[2] Löbl, M. C., et al., Phys. Rev. B 100, 155402 (2019).