Anomalous Photon-Assisted Tunneling in Graphene

Abstract

We investigated the Dirac electrons transmission through a potential barrier in the presence of circularly polarized light. An anomalous photon-assisted enhanced transmission is predicted and explained in a comparison with the well-known Klein paradox. It is demonstrated that the perfect transmission for nearly-head-on collision in an infinite graphene is suppressed in gapped dressed states of electrons, which is further accompanied by shift of peaks as a function of the incident angle away from the head-on collision. In addition, the perfect transmission in the absence of potential barrier is partially suppressed by a photon-induced gap in illuminated graphene. After the effect of rough edges of the potential barrier or impurity scattering is included, the perfect transmission with no potential barrier becomes completely suppressed and the energy range for the photon-assisted perfect transmission is reduced at the same time.

References in corpus (14)

• The electronic properties of graphene
• Chiral tunneling and the Klein paradox in graphene
• Photovoltaic Hall effect in graphene
• Spin-orbit coupling in curved graphene, fullerenes, nanotubes, and nanotube caps
• Selective transmission of Dirac electrons and ballistic magnetoresistance of \textit{n-p} junctions in graphene
• Tuning laser-induced bandgaps in graphene
• Dirac and Klein-Gordon particles in one-dimensional periodic potentials
• Unified description of the dc conductivity of monolayer and bilayer graphene at finite densities based on resonant scatterers
• Gaps tunable by electrostatic gates in strained graphene
• Bilayer graphene with single and multiple electrostatic barriers: band structure and transmission
• Tunneling of Dirac electrons through spatial regions of finite mass
• Density of quasiparticle states for a two-dimensional disordered system: Metallic, insulating, and critical behavior in the class D thermal quantum Hall effect
• Disorder-induced tail states in a gapped bilayer graphene
• Spin-dependent Scattering by a Potential Barrier on a Nanotube

Cited by in corpus (23)

• Irradiated graphene as a tunable Floquet topological insulator
• Hierarchy of Floquet gaps and edge states for driven honeycomb lattices
• Radiation effects on the electronic structure of bilayer graphene
• Peculiar electronic states, symmetries and Berry phases in irradiated $\alpha$-$T_3$ materials
• Non-perturbative laser effects on the electrical properties of graphene nanoribbons
• Quantum-statistical theory for laser-tuned transport and optical conductivities of dressed electrons in $α-\mc{T}_3$ materials
• Laser-induced effects on the electronic features of graphene nanoribbons
• Photon dressed electronic states in topological insulators: Tunneling and conductance
• Exploring the Optical States for Black Phosphorus: Anisotropy and Bandgap Tuning
• Nonlinear transport of ballistic Dirac electrons tunneling through a tunable potential barrier in graphene
• Gap-modulated doping effects on indirect exchange interaction between magnetic impurities in graphene
• Floquet bound states around defects and adatoms in graphene
• Floquet Spectrum and Two-Terminal Conductance of a Transition Metal Dichalcogenide Ribbon under a Circularly Polarized Laser Field
• Electron transmission through a periodically driven graphene magnetic barrier
• Effect of Energy Band Gap in Graphene on Negative Refraction through the Veselago Lens and Electron Conductance
• Beating oscillation and Fano resonance in the laser assisted electron transmission through graphene δ- function magnetic barriers
• Trapping photon-dressed Dirac electrons in a quantum dot studied by coherent two dimensional photon echo spectroscopy
• Band Tuning of Phosphorene Semiconductor via Floquet Theory
• Effects of nonlocal plasmons in gapped graphene micro-ribbon array and 2DEG on near-field electromagnetic response in the deep-subwavelength regime
• Theory for entanglement of electrons dressed with circularly polarized light in Graphene and three-dimensional topological insulators
• Non-linear photoconductivity of strongly driven graphene
• Coherent-scatterer enhancement and Klein-tunneling suppression by potential barriers in gapped graphene with chirality-time-reversal symmetry
• Pseudospin-one particles in the time-periodic dice lattice: A new approach to transport control