Magnetoexcitons in phosphorene monolayers, bilayers, and van der Waals heterostructures
arXiv:2108.05707 · doi:10.1103/PhysRevResearch.4.013154
Abstract
We study direct and indirect excitons in Rydberg states in phosphorene monolayers, bilayer and van der Waals (vdW) heterostructure in an external magnetic field, applied perpendicular to the monolayer or heterostructure within the framework of the effective mass approximation. Binding energies of magnetoexcitons are calculated by a numerical integration of the Schrodinger equation using the Rytova-Keldysh potential for direct magnetoexcitons and both the Rytova-Keldysh and Coulomb potentials for indirect one. The latter allows to understand the role of screening in phosphorene. We report the magnetic field energy contribution to the binding energies and diamagnetic coefficients (DMCs) for magnetoexcitons that strongly depend on the effective mass of electron and hole and their anisotropy and can be tuned by the external magnetic field. We demonstrate theoretically that the vdW phosphorene heterostructure is a novel category of 2D semiconductor offering a tunability of the binding energies of magnetoexcitons by mean of external magnetic field and control the binding energies and DMCs by the number of hBN layers separated two phosphorene sheets. Such tunability is potentially useful for the devices design.
13 pages 5 figures, 5 tables. arXiv admin note: text overlap with arXiv:2012.07125
References in corpus (23)
- Electric Field Effect in Atomically Thin Carbon Films
- The electronic properties of graphene
- Atomically thin p-n junctions with van der Waals heterointerfaces
- Strain engineered direct-indirect band gap transition and its mechanism in 2D phosphorene
- Magnetic Control of Valley Pseudospin in Monolayer WSe2
- Valley Zeeman Effect in Elementary Optical Excitations of a Monolayer WSe2
- Breaking of valley degeneracy by magnetic field in monolayer MoSe2
- Tunable optical properties of multilayers black phosphorus thin films
- Oxygen defects in phosphorene
- Valley Splitting and Polarization by the Zeeman Effect in Monolayer MoSe2
- Enhanced thermoelectric performance of phosphorene by strain-induced band convergence
- Unusual Scaling Laws of the Band Gap and Optical Absorption of Phosphorene Nanoribbons
- Electrically Tunable Quasi-Flat Bands, Conductance and Field Effect Transistor in Phosphorene
- Phosphorene oxides: bandgap engineering of phosphorene by oxidation
- Excitons in anisotropic 2D semiconducting crystals
- Landau levels and magneto-transport property of monolayer phosphorene
- Excitonic valley effects in monolayer WS under high magnetic fields
- Anisotropic exciton Stark shift in black phosphorus
- Towards superfluidity of dipolar excitons in a TMDC double layer
- The electronic origin of shear-induced direct to indirect gap transition and anisotropy diminution in phosphorene
- Disorder effect on the anisotropic resistivity of phosphorene determined by a tight-binding model
- Excitons in Phosphorene: A Semi-Analytical Perturbative Approach
- Anisotropic Stark shift, field-induced dissociation, and electroabsorption of excitons in phosphorene