Co-existence of classical snake states and Aharanov-Bohm oscillations along graphene p-n junctions
arXiv:1804.02590 · doi:10.1103/PhysRevB.98.035413
Abstract
Snake states and Aharonov-Bohm interferences are examples of magnetoconductance oscillations that can be observed in a graphene p-n junction. Even though they have already been reported in suspended and encapsulated devices including different geometries, a direct comparison remains challenging as they were observed in separate measurements. Due to the similar experimental signatures of these effects a consistent assignment is difficult, leaving us with an incomplete picture. Here we present measurements on p-n junctions in encapsulated graphene revealing several sets of magnetoconductance oscillations allowing for their direct comparison. We analysed them with respect to their charge carrier density, magnetic field, temperature and bias dependence in order to assign them to either snake states or Aharonov-Bohm oscillations. Furthermore we were able to consistently assign the various Aharonov-Bohm interferences to the corresponding area which the edge states enclose. Surprisingly, we find that snake states and Aharonov-Bohm interferences can co-exist within a limited parameter range.
Main article and Supporting Information
References in corpus (25)
- Chiral tunneling and the Klein paradox in graphene
- Selective transmission of Dirac electrons and ballistic magnetoresistance of \textit{n-p} junctions in graphene
- Landau Level Splitting in Graphene in High Magnetic Fields
- Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources
- Novel electric field effects on Landau levels in Graphene
- Interaction phenomena in graphene seen through quantum capacitance
- Direct measurement of the coherence length of edge states in the Integer Quantum Hall Regime
- Decoherence and single electron charging in an electronic Mach-Zehnder interferometer
- Snake Trajectories in Ultraclean Graphene p-n Junctions
- Atomic collapse, Lorentz boosts, Klein scattering, and other quantum-relativistic phenomena in graphene
- Scalable Tight-Binding Model for Graphene
- Fabry-Pérot interference in gapped bilayer graphene with broken anti-Klein tunneling
- Edge-State Velocity and Coherence in a Quantum Hall Fabry-Perot Interferometer
- Detecting non-Abelian Statistics with Electronic Mach-Zehnder Interferometer
- Snake States in Graphene p-n Junctions
- Quantum and classical confinement of resonant states in a trilayer graphene Fabry-Perot interferometer
- Fabry-Pérot resonances in a graphene/hBN Moiré superlattice
- Theory of carrier density in multigated doped graphene sheets with quantum correction
- Snake states and Klein tunneling in a graphene Hall bar with a pn-junction
- Giant valley-isospin conductance oscillations in ballistic graphene
- Interplay between snake and quantum edge states in a graphene Hall bar with a pn-junction
- Imaging snake orbits at graphene n-p junctions
- Chiral interface states in graphene - junctions
- Classical and quantum magneto-oscillations of current flow near a p-n junction in graphene
- Graphene - junctions in the Quantum Hall regime: numerical study of incoherent scattering effects
Cited by in corpus (18)
- A tunable Fabry-Pérot quantum Hall interferometer in graphene
- Quantum Hall valley splitters and tunable Mach-Zehnder interferometer in graphene
- Emission and Coherent Control of Levitons in Graphene
- Magnetoconductance, Quantum Hall Effect, and Coulomb Blockade in Topological Insulator Nanocones
- Splitting of conductance resonance through a magnetic quantum dot in graphene
- Low Magnetic Field Regime of a Gate-Defined Constriction in High-Mobility Graphene
- Valley isospin of interface states in a graphene junction in the quantum Hall regime
- Mesoscopic valley filter in graphene Corbino disk containing a p-n junction
- Topological Valley Transport in Bilayer Graphene Induced by Interlayer Sliding
- Aharonov-Bohm interferences in polycrystalline graphene
- Aharonov-Bohm conductance oscillations and current equilibration in local n - p junctions in graphene
- Design of graphene waveguide: Effect of edge orientation and waveguide configuration
- Spin-orbit interaction and snake states in graphene - junctions
- Stepped Graphene-based Aharonov-Bohm Interferometers
- Interplay of filling fraction and coherence in symmetry broken graphene p-n junction
- Time-dependent transport in Graphene Mach-Zender Interferometers
- Chiral spin channels in curved graphene junctions
- Fabry-Perot and Aharonov-Bohm interference in ideal graphene nanoribbons