Current-voltage characteristics of graphene devices: interplay between Zener-Klein tunneling and defects

Abstract

We report a theoretical/experimental study of current-voltage characteristics (I-V) of graphene devices near the Dirac point. The I-V can be described by a power law (I \propto V^α, with 1< α<= 1.5). The exponent is higher when the mobility is lower. This superlinear I-V is interpreted in terms of the interplay between Zener-Klein transport, that is tunneling between different energy bands, and defect scattering. Surprisingly, the Zener-Klein tunneling is made visible by the presence of defects.

5 pages, 3 figures

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Cited by in corpus (46)

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• Out-of-equilibrium criticalities in graphene superlattices
• Dirac fermions in strong electric field and quantum transport in graphene
• Electronic Thermal Conductivity Measurements in Intrinsic Graphene
• Zero-bias conductance peak and Josephson effect in graphene-NbTiN junctions
• Quantization of charged fields in the presence of critical potential steps
• Dynamics of electric transport in interacting Weyl semimetals
• Common-Path Interference and Zener Tunneling in Bilayer Graphene p-n Junctions
• Mesoscopic Klein-Schwinger effect in graphene
• Generalized WKB theory for electron tunneling in gapped $\alpha -{\mathcal{T}}_3$ lattices
• Optical emission of graphene and electron-hole pair production induced by a strong THz field
• Exactly solvable cases in QED with t-electric potential steps
• Novel Type of Superlattices Based on Gapless Graphene with the Alternating Fermi Velocity
• Dynamics of the (spin-) Hall effect in topological insulators and graphene
• Vacuum instability in slowly varying electric fields
• Scattering and pair creation by a constant electric field between two capacitor plates
• Signature of Schwinger's pair creation rate via radiation generated in graphene by strong electric current
• Self heating and nonlinear current-voltage characteristics in bilayer graphene
• Particle creation by peak electric field
• Interband tunneling effects on materials transport properties using the first principles Wigner distribution
• Radiation from electrons in graphene in strong electric field
• Zener tunneling in the electrical transport of quasi-metallic carbon nanotubes
• Electroluminescence and Energy Transfer Mediated by Hyperbolic Polaritons
• Kinetic equation approach to graphene in strong external fields
• Nonequilibrium Excitations and Transport of Dirac Electrons in Electric-Field-Driven Graphene
• Current response of nonequilibrium steady states in Landau-Zener problem: Nonequilibrium Green's function approach
• Effect of Coulomb carrier drag and terahertz plasma instability in p+-p-i-n-n+ graphene tunneling transistor structures
• Statistical properties of states in QED with unstable vacuum
• Two distinct ballistic processes in graphene at Dirac point
• Resonant plasmonic terahertz detection in gated graphene p-i-n field-effect structures enabled by the Zener-Klein tunneling nonlinearity
• Depletion of carriers and negative differential conductivity in an intrinsic graphene under a dc electric field
• Comparing two different descriptions of the I-V characteristic of graphene: theory and experiment
• Unexpected linear conductivity in Landau-Zener model: limitations and improvements of the relaxation time approximation in the quantum master equation
• Transit-time resonances enabling amplification and generation of terahertz radiation in periodic graphene p-i-n structures with the Zener-Klein interband tunneling
• High-frequency rectification in graphene lateral p-n junctions
• Zener tunneling isospin Hall effect in HgTe quantum wells and graphene multilayers
• Nonlinear electric transport in graphene with magnetic disorder
• Physical realization of Photonic Klein Tunneling
• Photon emission in the graphene under the action of a quasiconstant external electric field
• States of charged quantum fields and their statistical properties in the presence of critical potential steps
• Vacuum instability in time-dependent electric fields. New example of exactly solvable case
• Spectra of electronic excitations in graphene near Coulomb impurities
• Developing a semiclassical Wentzel-Kramers-Brillouin theory for $\alpha -{\mathcal{T}}_3$ model
• Electrical conductivity of collapsed multilayer graphene tubes