|
This article is cited in 16 scientific papers (total in 16 papers)
Low dimensional systems
Excitons and trions in bilayer van der Waals heterostructures
M.A. Semina Ioffe Institute, St. Petersburg
Abstract:
Excitons and trions in bilayer structures based on transition metal dichalcogenides are theoretically studied. Expressions for the effective potential of interparticle interaction in such a system with allowance for a significant dielectric contrast in the heterostructure are obtained. Simple and physically justified variational functions for electron–hole complexes are proposed. A variational calculation of the exciton and trion binding energies as functions of the interlayer distance, taking into account the specific features of the screening of the Coulomb interaction, is performed. The accuracy of the variational approach is confirmed by direct numerical calculation of the exciton binding energy as a function of the interlayer distance.
Keywords:
spatially indirect exciton, trion, monolayers of transitional metal diñhalcogenides, bilayer structures, Rytova–Keldysh potential.
Received: 24.06.2019 Revised: 24.06.2019 Accepted: 24.06.2019
Citation:
M.A. Semina, “Excitons and trions in bilayer van der Waals heterostructures”, Fizika Tverdogo Tela, 61:11 (2019), 2234–2239; Phys. Solid State, 61:11 (2019), 2218–2223
Linking options:
https://www.mathnet.ru/eng/ftt8642 https://www.mathnet.ru/eng/ftt/v61/i11/p2234
|
Statistics & downloads: |
Abstract page: | 58 | Full-text PDF : | 24 |
|