Quantum conductance of graphene nanoribbons with edge defects

Abstract

The conductance of metallic graphene nanoribbons (GNRs) with single defects and weak disorder at their edges is investigated in a tight-binding model. We find that a single edge defect will induce quasi-localized states and consequently cause zero-conductance dips. The center energies and breadths of such dips are strongly dependent on the geometry of GNRs. Armchair GNRs are much more sensitive to a vacancy than zigzag GNRs, but are less sensitive to a weak scatter. More importantly, we find that with a weak disorder, zigzag GNRs will change from metallic to semiconducting due to Anderson localization. But a weak disorder only slightly affects the conductance of armchair GNRs. The influence of edge defects on the conductance will decrease when the widths of GNRs increase.

arXiv comment8 pages and 11 figures

References in corpus (26)

• Electric Field Effect in Atomically Thin Carbon Films
• Two-Dimensional Gas of Massless Dirac Fermions in Graphene
• Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
• Energy Band Gap Engineering of Graphene Nanoribbons
• Random-Matrix Theory of Quantum Transport
• Graphene Nano-Ribbon Electronics
• Electronic Properties of Disordered Two-Dimensional Carbon
• Electronic States of Graphene Nanoribbons
• Unconventional Integer Quantum Hall effect in graphene
• Interacting electrons in disordered wires: Anderson localization and low-temperature transport
• Peculiar Width Dependence of the Electronic Property of Carbon Nanoribbons
• Scanning tunneling microscopy and spectroscopy of the electronic local density of states of graphite surfaces near monoatomic step edges
• Edge state on hydrogen-terminated graphite edges investigated by scanning tunneling microscopy
• Effect of Disorder on Transport in Graphene
• Tunable Coulomb blockade in nanostructured graphene
• Zero-Conductance Resonances due to Flux States in Nanographite Ribbon Junctions
• Coherent transport in graphene nanoconstrictions
• Edge and Surface States in the Quantum Hall Effect in Graphene
• Electronic transport in locally gated graphene nanoconstrictions
• Conductance of carbon nanotubes with disorder: A numerical study
• Transport through a quantum wire with a side quantum-dot array
• Electronic Structure of gated graphene and graphene ribbons
• Conductivity landscape of highly oriented pyrolytic graphite surface containing ribbons and edges
• Anderson localization in carbon nanotubes: defect density and temperature effects
• Numerical study of the lattice vacancy effects on the single-channel electron transport of graphite ribbons
• Interference effects in electronic transport through metallic single-wall carbon nanotubes

Cited by in corpus (67)

• Crystallographic Etching of Few-Layer Graphene
• Monolayer Topological Insulators: Silicene, Germanene and Stanene
• Charge Transport in Disordered Graphene-Based Low Dimensional Materials
• Conductance quantization and transport gap in disordered graphene nanoribbons
• Edge disorder induced Anderson localization and conduction gap in graphene nanoribbons
• Electronic transport properties of graphene nanoribbons
• Quantized conductance of a suspended graphene nanoconstriction
• Enhanced thermoelectric properties in hybrid graphene-boron nitride nanoribbons
• Topological switch between second-order topological insulators and topological crystalline insulators
• Towards Chirality Control of Graphene Nanoribbons Embedded in Hexagonal Boron Nitride
• Quantized Conductance and Field-Effect Topological Quantum Transistor in Silicene Nanoribbons
• Edge Effect on Electronic Transport Properties of Graphene Nanoribbons and Presence of Perfectly Conducting Channel
• Transmission through a boundary between monolayer and bilayer graphene
• Edge Magneto-Fingerprints in Disordered Graphene Nanoribbons
• Simple model for second-order topological insulators and loop-nodal semimetals in Transition Metal Dichalcogenides XTe${}_2$ (X=Mo,W)
• Quantum blockade and loop current induced by a single lattice defect in graphene nanoribbons
• Towards Graphene Nanoribbon-based Electronics
• Spontaneous edge-defect formation and defect-induced conductance suppression in graphene nanoribbons
• Interface Landau levels in graphene monolayer-bilayer junction
• Ab initio spin-flip conductance of hydrogenated graphene nanoribbons: Spin-orbit interaction and scattering with local impurity spins
• Generalized transfer matrix theory on electronic transport through graphene waveguide
• Anderson disorder in graphene nanoribbons: A local distribution approach
• Resonant Spectrum Analysis of the Conductance of Open Quantum System and Three Types of Fano Parameter
• Transition from ballistic to diffusive behavior of graphene ribbons in the presence of warping and charged impurities
• Detecting the Néel vector of altermagnet by attaching a topological insulator and crystalline valley-edge insulator
• Ab initio quantum transport through armchair graphene nanoribbons: Streamlines in the current density
• Reducing sheet resistance of self-assembled transparent graphene films by defect patching and doping with UV/ozone treatment
• Nearly Perfect Single-Channel Conduction in Disordered Armchair Nanoribbons
• Conductance across strain junctions in graphene nanoribbons
• Positional dependence of energy gap on line defect in armchair graphene nanoribbons: Two-terminal transport and related issues
• Impurity invisibility in graphene: Symmetry guidelines for the design of efficient sensors
• Nonlinear Graphene Quantum Capacitors for Electro-optics
• Spectral gap induced by structural corrugation in armchair graphene nanoribbons
• Berry's Phase for Standing Wave Near Graphene Edge
• Band bending and zero-conductance resonances controlled by edge electric fields in zigzag silicene nanoribbons
• Suppressed conductance in a metallic graphene nano-junction
• Wetting and energetics in nanoparticle etching of graphene
• Obtaining localization properties efficiently using the Kubo-Greenwood formalism
• Controllable spin filtering and half metallicity in ${\beta }_{12}$-borophene nanoribbons
• Impurity segregation in graphene nanoribbons
• Strain-induced modifications of transport in gated graphene nanoribbons
• Quasi-bound states and Fano effect in T-shaped graphene nanoribbons
• Aspects of electron transport in zigzag graphene nanoribbons
• Electronic transport in graphene nanoribbons with sublattice-asymmetric doping
• Coherent transport of armchair graphene constrictions
• Nonequilibrium Keldysh Formalism for Interacting Leads -- Application to Quantum Dot Transport Driven by Spin Bias
• Effects of random atomic disorder on the magnetic stability of graphene nanoribbons with zigzag edges
• Diffusion and localization in carbon nanotubes and graphene nanoribbons
• Stability of destructive interference antiresonances in electron transport through graphene nanostructures
• Transport signatures of relativistic quantum scars in a graphene cavity
• Orbital magnetic moments in insulating Dirac systems: Impact on magnetotransport in graphene van der Waals heterostructures
• Design of graphene waveguide: Effect of edge orientation and waveguide configuration
• Current vortices in hexagonal graphene quantum dots
• Scanning gate microscopy in graphene nanostructures
• Electron Transfer on Impurity doped Graphene Nanoribbon
• Effect of edge vacancies on performance of planar graphene tunnel field-effect transistor
• Finger-gate manipulated quantum transport in Dirac materials
• Kernel polynomial method to Anderson transition in disordered $\beta$-graphyne
• Ballistic guided electrons against disorder in graphene nanoribbons
• Effect of edge vacancies on localized states in semi-infinite zigzag graphene sheet
• Impact of vacancies on twisted bilayer graphene quantum point contacts
• Fermi Arcs in Tilted Weyl Semimetals: Classification, Evolution and Transport Properties
• Large positive magnetoconductance in carbon nanoscrolls
• Thermodefect voltage in graphene nanoribbon junctions
• Effects of zigzag edge states on the thermoelectric properties of finite graphene nanoribbons
• Scalable Machine Learning Models for Predicting Quantum Transport in Disordered 2D Hexagonal Materials
• Potential-tuned magnetic switches and half-metallicity transition in zigzag graphene nanoribbons