Transport through normal metal - graphene contacts

Abstract

Conductance of zigzag interfaces between graphene sheet and normal metal is investigated in the tight-binding approximation. Boundary conditions, valid for a variety of scattering problems, are constructed and applied to the normal metal -- graphene -- normal metal (NGN) junctions. At the Dirac point, the conductance is determined solely by the evanescent modes and is inversely proportional to the length of the junction. It is also independent on the interface resistance. Away from the Dirac point, the propagating modes' contribution dominates. We also observe that even in the junctions with high interface resistance, for certain modes, ideal transmission is possible via Fabry-Perot like resonances.

6 pages, 2 figure, version as resubmitted in May 2007. Considerably extended

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Cited by in corpus (45)

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• Effects of metallic contacts on electron transport through graphene
• Contact resistance and shot noise in graphene transistors
• Transport in disordered graphene nanoribbons
• Ballistic transport in disordered graphene
• Transport in superlattices on single layer graphene
• Conformal mapping and shot noise in graphene
• Time-dependent Landauer-Büttiker formula: application to transient dynamics in graphene nanoribbons
• Microscopic theory of the proximity effect in superconductor-graphene nanostructures
• Time-dependent transport in graphene nanoribbons
• Controllable spin-dependent transport in armchair graphene nanoribbon structures
• MagnetoResistance of graphene-based spin valves
• Single-parameter quantum charge and spin pumping in armchair graphene nanoribbons
• First principles study of electronic transport through a Cu(111)|graphene junction
• Charge transport and shot noise in ballistic graphene sheet
• Generalized transfer matrix theory on electronic transport through graphene waveguide
• Calculation of the conductance of a graphene sheet using the Chalker-Coddington network model
• Theoretical studies of spin-dependent electronic transport in ferromagnetically contacted graphene flakes
• Selective focusing of electrons and holes in a graphene-based superconducting lens
• Spin currents and magnetoresistance of graphene-based magnetic junctions
• Weak momentum scattering and the conductivity of graphene
• Effect of the attachment of ferromagnetic contacts on the conductivity and giant magnetoresistance of graphene nanoribbons
• Self heating and nonlinear current-voltage characteristics in bilayer graphene
• Quantum transport in honeycomb lattice ribbons with armchair and zigzag edges coupled to semi-infinite linear chain leads
• Transport gap engineering by contact geometry in graphene nanoribbons: Experimental and theoretical studies on artificial materials
• Suppression of scattering in quantum confined 2D-helical Dirac systems
• Exact results for intrinsic electronic transport in graphene
• Effects of disorder and contacts on transport through graphene nanoribbons
• Strongly modulated transmissions in gapped armchair graphene nanoribbons with sidearm or on-site gate voltage
• Effective contact model for geometry-independent conductance calculations in graphene
• Two distinct ballistic processes in graphene at Dirac point
• Klein tunneling through the trapezoidal potential barrier in graphene: conductance and shot noise
• Double refraction and spin splitter in a normal-hexagonal semiconductor junction
• Charge transport in ballistic multiprobe graphene structures
• Contact conductance between graphene and quantum wires
• Transparent Graphene-Superconductor Interfaces: Quantum Hall and Zero Field Regimes
• Electron Transmission Across Normal Metal-Strained Graphene-Normal Metal Junctions
• Ballistic guided electrons against disorder in graphene nanoribbons
• Quantum Well Based on Graphene and Narrow-Gap Semiconductors
• Pseudodiffusive transmission of nodal Dirac fermions through a clean d-wave superconductor
• Quantum transport of Dirac fermions in selected graphene nanosystems away from the charge-neutrality point