Nonlinear screening and ballistic transport in a graphene p-n junction

Abstract

We study the charge density distribution, the electric field profile, and the resistance of an electrostatically created lateral p-n junction in graphene. We show that the electric field at the interface of the electron and hole regions is strongly enhanced due to limited screening capacity of Dirac quasiparticles. Accordingly, the junction resistance is lower than estimated in previous literature.

4 pages, 2 figures. (v1) Original version (v2) Introduction largely rewritten, minor typos fixed throughout

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• The electronic properties of graphene
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• Evidence of Klein tunneling in graphene p-n junctions
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• Gate-activated photoresponse in a graphene p-n junction
• Evidence of the role of contacts on the observed electron-hole asymmetry in graphene
• The role of contacts in graphene transistors: A scanning photocurrent study
• Electronic properties of mesoscopic graphene structures: charge confinement and control of spin and charge transport
• Klein tunneling in graphene: optics with massless electrons
• Klein Backscattering and Fabry-Perot Interference in Graphene Heterojunctions
• Colloquium: Graphene spectroscopy
• Gate-controlled Guiding of Electrons in Graphene
• Conductance of p-n-p graphene structures with 'air-bridge' top gates
• The Schwinger mechanism and graphene
• Effect of radiation on transport in graphene
• Smooth electron waveguides in graphene
• Conductance asymmetry of graphene pn junction
• Nonlinear screening of charges induced in graphene by metal contacts
• Density-Functional Theory of Graphene Sheets
• Effect of disorder on a graphene p-n junction
• Atomic collapse, Lorentz boosts, Klein scattering, and other quantum-relativistic phenomena in graphene
• Current-voltage characteristics of graphene devices: interplay between Zener-Klein tunneling and defects
• Guided plasmons in graphene p-n junctions
• Conductance oscillations induced by ballistic snake states in a graphene heterojunction
• Effective medium theory for disordered two-dimensional graphene
• Quasi-exact solution to the Dirac equation for the hyperbolic secant potential
• Conductance of disordered graphene superlattice
• Terahertz and Infrared Photodetection using p-i-n Multiple-Graphene-Layer Structures
• Transport in superlattices on single layer graphene
• Spin-dependent Klein tunneling in graphene: Role of Rashba spin-orbit coupling
• Graphene-based electronic spin lenses
• Switching and Rectification of a Single Light-sensitive Diarylethene Molecule Sandwiched between Graphene Nanoribbons
• Quantum behavior of graphene transistors near the scaling limit
• Landau Level Collapse in Gated Graphene Structures
• Scattering of two-dimensional massless Dirac electrons by a circular potential barrier
• Electrical Transport in High Quality Graphene pnp Junctions
• Substrate Gating of Contact Resistance in Graphene Transistors
• Neutrality point of graphene with coplanar charged impurities
• Imaging the breaking of electrostatic dams in graphene for ballistic and viscous fluids
• Graphene Tunneling Transit-Time Terahertz Oscillator Based on Electrically Induced p-i-n Junction
• Dirac Spectrum in Piecewise Constant One-Dimensional Potentials
• Linear Response and the Thomas-Fermi Approximation in Undoped Graphene
• Semiclassical magnetotransport in graphene n-p junctions
• Klein Tunneling and Berry Phase $\pi$ in Bilayer Graphene with a Band Gap
• Contact doping, Klein tunneling, and asymmetry of shot noise in suspended graphene
• Effective Magnetic Fields in Graphene Superlattices
• Towards superlattices: Lateral bipolar multibarriers in graphene
• Many body renormalization of the minimal conductivity in graphene
• Resonant plasmonic terahertz detection in graphene split-gate field-effect transistors with lateral p-n junctions
• Ultra-sharp lateral $p\text{-}n$ junctions in modulation-doped graphene
• Electrically-induced n-i-p junctions in multiple graphene layer structures
• Efficient quantum transport simulation for bulk graphene heterojunctions
• Ballistic transport of graphene pnp junctions with embedded local gates
• P-N junctions dynamics in graphene channel induced by ferroelectric domains motion
• Spatially resolving density-dependent screening around a single charged atom in graphene
• Large peak-to-valley ratio of negative-differential-conductance in graphene p-n junctions
• Electrostatics of metal-graphene interfaces: sharp p-n junctions for electron-optical applications
• Electron Flow in Circular n-p Junctions of Bilayer Graphene
• On the applicability of the two-band model to describe transport across n-p junctions in bilayer graphene
• Orbital-free density functional theory of out-of-plane charge screening in graphene
• Electron-hole asymmetry in two-terminal graphene devices
• Gate-tunable Veselago Interference in a Bipolar Graphene Microcavity
• Graphene as a source of entangled plasmons
• Limits for the graphene on ferroelectric domain wall p-n-junction rectifier for different regimes of current
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• Impact of the domain structure in ferroelectric substrate on graphene conductance (authors' review)
• Time-dependent simulation of particle and displacement currents in THz graphene transistors
• Compact Graphene Plasmonic Slot Photodetector on Silicon-on-insulator with High Responsivity
• Zener tunneling isospin Hall effect in HgTe quantum wells and graphene multilayers
• Molecular collapse in graphene: sublattice symmetry effect
• Nontrivial temperature behavior of the carrier concentration in the nanostructure "graphene channel on ferroelectric substrate with domain walls"
• Semianalytical quantum model for graphene field-effect transistors
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• Graphene separation and stretching induced by piezoelectric effect of ferroelectric domains: impact on the conductance of graphene channel
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• Observation of angle-dependent transmission of Dirac electrons in graphene hetero junctions
• Ballistic conductivity of graphene channel with p-n junction on ferroelectric domain wall