Electron scattering of mass-inverted in graphene quantum dots
arXiv:2202.12877 · doi:10.1016/j.physleta.2022.128325
Abstract
We study the scattering of Dirac electrons of circular graphene quantum dot with mass-inverted subject to electrostatic potential. The obtained solutions of the energy spectrum are used to determine the scattering coefficients at the interface of the two regions. Using the asymptotic solutions at large arguments, we explicitly determine the radial component of reflected current density and the scattering efficiency. It is found that the presence of a mass term outside in addition to another one inside the quantum dot strongly affects the scattering of electrons. In particular, a non-null square modulus of the scattering coefficient is found at zero energy.
11 pages, 8 figures
References in corpus (13)
- Electric Field Effect in Atomically Thin Carbon Films
- Chiral tunneling and the Klein paradox in graphene
- Chaotic Dirac billiard in graphene quantum dots
- Evidence of Klein tunneling in graphene p-n junctions
- Quantum dots in graphene
- Quasi-bound states of quantum dots in single and bilayer graphene
- Tunable few-electron double quantum dots and Klein tunnelling in ultra-clean carbon nanotubes
- Electrostatically confined monolayer graphene quantum dots with orbital and valley splittings
- Transport Properties of Graphene Nanoroads in Boron-Nitride Sheets
- Superlattice Based on Graphene on a Strip Substrate
- Quantum confinement of Dirac quasiparticles in graphene patterned with subnanometer precision
- Electron flow in circular graphene quantum dots
- Chiral states around a mass-inverted quantum dot in graphene