Tunable effective masses of magneto-excitons in two-dimensional materials
arXiv:2105.13867 · doi:10.1016/j.ssc.2021.114371
Abstract
Excitonic properties of GeH and SnH, also known as Xanes, are investigated within the effective mass model. A perpendicularly applied magnetic field induces a negative shift on the exciton center-of-mass kinetic energy that is approximately quadratic with its momentum, thus pushing down the exciton dispersion curve and flattening it. This can be interpreted as an increase in the effective mass of the magneto-exciton, tunable by the field intensity. Our results show that in low effective mass two-dimensional semiconductors, such as Xanes, the applied magnetic field allows one to tune the magneto-exciton effective mass over a wide range of values.
References in corpus (8)
- Graphane: a two-dimensional hydrocarbon
- Exciton band structure of monolayer MoS2
- Graphene to Graphane: A Theoretical Study
- Anisotropic exciton Stark shift in black phosphorus
- Luminescent emission of excited Rydberg excitons from monolayer WSe2
- Stark shift of excitons and trions in two-dimensional materials
- Excitons in Phosphorene: A Semi-Analytical Perturbative Approach
- Anisotropic Stark shift, field-induced dissociation, and electroabsorption of excitons in phosphorene