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Publicatie

Excitons, trions, and biexcitons in transition-metal dichalcogenides

Tijdschriftbijdrage - e-publicatie

Ondertitel:magnetic-field dependence
The influence of a perpendicular magnetic field on the binding energy and structural properties of excitons, trions, and biexcitons in monolayers of semiconducting transition metal dichalcogenides (TMDs) is investigated. The stochastic variational method (SVM) with a correlated Gaussian basis is used to calculate the different properties of these few-particle systems. In addition, we present a simplified variational approach which supports the SVM results for excitons as a function of magnetic field. The exciton diamagnetic shift is compared with recent experimental results, and we extend this concept to trions and biexcitons. The effect of a local potential fluctuation, which we model by a circular potential well, on the binding energy of trions and biexcitons is investigated and found to significantly increase the binding of those excitonic complexes.
Tijdschrift: Physical review B
ISSN: 2469-9969
Volume: 97
Jaar van publicatie:2018
Trefwoorden:A1 Journal article
BOF-keylabel:ja
BOF-publication weight:2
CSS-citation score:3
Auteurs:International
Authors from:Higher Education
Toegankelijkheid:Open