Please view the posters presented at the 18th Annual CityTech Faculty and Student Research Poster Session below. You can click on each poster to enlarge it and view the PDF version under the poster abstract.
We thank all presenters for sharing their innovative and informative research with the CityTech community and beyond!
37. Rydberg Excitons in novel two-dimensional materials: TMDCs and Xenes
We study direct and indirect magnetoexcitons in novel two-dimensional materials such as transition-metal dichalcogenides (TMDCs) and Xenes, which are encapsulated or spatially separated by h-BN monolayers. The formation of magnetoexcitons in TMDC monolayer or heterostructure occur in the presence of the magnetic field which is perpendicular to the layer. The formation of magnetoexcitons in Xenes monolayer and heterostructure are studied in presence of both perpendicular magnetic and electric fields. We calculate the binding energies, energy contributions, and diamagnetic coefficients based on numerical solution of the Schrödinger equation using both the Rytova-Keldysh and Coulomb potentials for the description of electron-hole interaction. We find that the binding energies of magnetoexcitons in TMDCs can be tuned by the magnetic field. It is demonstrated that the binding energies of the magnetoexcitons of the Rydberg 1s, 2s, 3s, and 4s states in the Xenes monolayer and heterostructure could be tuned by changing both the external magnetic and electric fields. The calculations of the binding energies of magnetoexcitons and diamagnetic coefficients in TMDC heterostructures and Xenes monolayers and heterostructure are reported for the first time. View or download a PDF version of this poster.
