Resonant scattering of Dice quasiparticles on oscillating quantum dots
arXiv:2002.04659 · doi:10.1140/epjb/e2020-100600-2
Abstract
We consider a Dice model with Dirac cones intersected by a topologically flat band at the charge neutrality point and analyze the inelastic scattering of massless pseudospin-1 particles on a circular, gate-defined, oscillating barrier. Focusing on the resonant scattering regime at small energy of the incident wave, we calculate the reflection and transmission coefficients and derive explicit expressions for the time-dependent particle probability, current density and scattering efficiency within (Floquet) Dirac-Weyl theory, both in the near-field and the far-field. We discuss the importance of sideband scattering and Fano resonances in the quantum limit. When resonance conditions are fulfilled, the particle is temporarily trapped in vortices located close to edge of the quantum dot before it gets resubmitted with strong angular dependence. Interestingly even periodically alternating forward and backward radiation may occur. We also demonstrate the revival of resonant scattering related to specific fusiform boundary trapping profiles.
arXiv comment12 pages, 11 figures
References in corpus (25)
- The electronic properties of graphene
- Topological Insulators
- Chiral tunneling and the Klein paradox in graphene
- Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
- Quantum interference and Klein tunneling in graphene heterojunctions
- Evidence of Klein tunneling in graphene p-n junctions
- Massless Dirac-Weyl Fermions in a T_3 Optical Lattice
- Barrier transmission of Dirac-like pseudospin-one particles
- Electrostatic confinement of electrons in an integrable graphene quantum dot
- Caustics due to Negative Refractive Index in Circular Graphene p-n Junctions
- Mie scattering analog in graphene: lensing, particle confinement, and depletion of Klein tunneling
- Diverging dc conductivity due to a flat band in disordered pseudospin-1 Dirac-Weyl fermions
- Scattering of two-dimensional massless Dirac electrons by a circular potential barrier
- Rashba Spin Orbit Interaction and Birefringent Electron Optics in Graphene
- Imaging Dirac fermions flow through a circular Veselago lens
- Spin Orbit Interaction and Isotropic Electronic Transport in Graphene
- Scattering of two-dimensional Dirac fermions on gate-defined oscillating quantum dots
- Electron flow in circular graphene quantum dots
- Electric transport through circular graphene quantum dots: Presence of disorder
- Interplay of Lorentz-Berry forces in position-momentum spaces for valley-dependent impurity scattering in alpha-T3 lattices
- Electron dynamics in graphene with gate-defined quantum dots
- Electron confinement in graphene with gate-defined quantum dots
- Intravalley Multiple Scattering of Quasiparticles in Graphene
- Dot-bound and dispersive states in graphene quantum dot superlattices
- Floquet scattering of light and sound in Dirac optomechanics