2018/05/07 by M. Van der Donck, M. Zarenia, F. M. Peeters · 58 citations
Chemistry · Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Atomic physics #Biexciton #Binding energy #Chemistry #Condensed matter physics #Diamagnetism #Exciton #Magnetic field #Materials science #Perovskite Materials and Applications #Physics #Quantum Dots Synthesis And Properties #Quantum mechanics #Transition metal #Trion #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.97.195408
published in Physical review. B./Physical review. B 97(19) (American Physical Society) · 12 pages, 7 figures, 5 tables
arxiv created 2018/05/07 · openalex publication_date 2018/05/07 · arxiv updated 2018/05/08 · openalex created_date 2018/05/17 · openalex updated_date 2026/08/05
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.