Electron transport in disordered graphene

Abstract

We study electron transport properties of a monoatomic graphite layer (graphene) with different types of disorder. We show that the transport properties of the system depend strongly on the character of disorder. Away from half filling, the concentration dependence of conductivity is linear in the case of strong scatterers, in line with recent experimental observations, and logarithmic for weak scatterers. At half filling the conductivity is of the order of e^2/h if the randomness preserves one of the chiral symmetries of the clean Hamiltonian; otherwise, the conductivity is strongly affected by localization effects.

21 pages, 9 figures

References in corpus (4)

• Electric Field Effect in Atomically Thin Carbon Films
• Unconventional Integer Quantum Hall effect in graphene
• Disorder Induced Localized States in Graphene
• Nonlinear screening of charge impurities in graphene

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• Charge Transport in Disordered Graphene-Based Low Dimensional Materials
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• Adsorbate-limited conductivity of graphene
• Quantum criticality and minimal conductivity in graphene with long-range disorder
• Voltage and temperature dependencies of conductivity in gated graphene
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• Theory of Anomalous Quantum Hall Effects in Graphene
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• Molecular circuits based on graphene nano-ribbon junctions
• Landauer conductance and twisted boundary conditions for Dirac fermions in two space dimensions
• Effective contact model for transport through weakly-doped graphene
• Coulomb impurity in graphene
• Spatial distribution of local currents of massless Dirac fermions in quantum transport through graphene nanoribbons
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• Impurity Scattering and Mott's Formula in Graphene
• Scattering of charge carriers by point defects in bilayer graphene
• Impurity-assisted tunneling in graphene
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• Electronic transport in normal-conductor/graphene/normal-conductor junctions and conditions for insulating behavior at a finite charge-carrier density
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• Conductivity of disordered graphene at half filling
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• Planar QED at finite temperature and density: Hall conductivity, Berry's phases and minimal conductivity of graphene
• Thermo-Electric Power of Dirac Fermions in Graphene
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• Hall Coefficient of Dirac Fermions in Graphene under Charged Impurity Scatterings
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• Disorder-induced pseudodiffusive transport in graphene nanoribbons
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