Excitons and trions in CrSBr bilayers
We study theoretically the neutral and charged excitons in two-dimensional semiconductors with an isotropic dispersion of charge carriers. Such a situation is realized in CrSBr-based van der Waals heterostructures. We calculate the binding energies of excitons and trions and explore their dependence on the mass ratio, dielectric screening, and interlayer distance in bilayer structures. We also address the effects of exciton-light coupling, including the radiative decay and long-range electron-hole exchange interaction, and briefly analyze correlations between the excitons and the Fermi sea of resident electrons. The estimates for CrSBr bilayers are in reasonable agreement with recent experiments.
Authors
- Alexander Högele (ORCID: https://orcid.org/0000-0002-0178-9117)
- Михаил Михайлович Глазов (ORCID: https://orcid.org/0000-0003-4462-0749)
- Anna Rupp
- Anvar S. Baimuratov (ORCID: https://orcid.org/0000-0001-8708-2405)
- M. A. Semina (ORCID: https://orcid.org/0000-0003-3796-2329)
- Farsane Tabataba‐Vakili (ORCID: https://orcid.org/0000-0001-5911-7594)
Institutions
- Skolkovo Institute of Science and Technology (RU)
- Munich Center for Quantum Science and Technology (DE)
- Ludwig-Maximilians-Universität München (DE)
- Technische Universität Braunschweig (DE)
- Ioffe Institute (RU)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2025-05-05
- DOI
- https://doi.org/10.1103/physrevb.111.205301
- Citations
- 2
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- Deutsche Forschungsgemeinschaft
- Russian Science Foundation