Charge and spin Hall conductivity in metallic graphene

Abstract

Graphene has an unusual low-energy band structure with four chiral bands and half-quantized and quantized Hall effects that have recently attracted theoretical and experimental attention. We study the Fermi energy and disorder dependence of its spin Hall conductivity. In the metallic regime we find that vertex corrections enhance the intrinsic spin Hall conductivity and that skew scattering can lead to its values that exceed the quantized ones expected when the chemical potential is inside the spin-orbit induced energy gap. We predict that large spin Hall conductivities will be observable in graphene even when the spin-orbit gap does not survive disorder.

4 pages, 2 figures

References in corpus (4)

• Electric Field Effect in Atomically Thin Carbon Films
• Dissipationless Quantum Spin Current at Room Temperature
• Unconventional Integer Quantum Hall effect in graphene
• First Principles Calculation of Anomalous Hall Conductivity in Ferromagnetic bcc Fe

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• Electron energy spectrum and the Berry phase in graphite bilayer
• Berry phase mediated topological thermoelectric transport in gapped single and bilayer graphene
• Spin currents and magnetoresistance of graphene-based magnetic junctions
• Intrinsic Spin Hall Effect in s-wave Superconducting State: Analysis of Rashba Model
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• Current-induced Spin Polarization in Two-Dimensional Hole Gas
• Collective Excitations of Dirac Electrons in Graphene
• Fractional Spin Hall Effect in Atomic Bose Gases
• Spin-Hall conductivity of a spin-polarized two-dimensional electron gas with Rashba spin-orbit interaction and magnetic impurities
• Intrinsic spin Hall effect in graphene: Numerical calculations in a multi-orbital mode
• Theory of AC Anomalous Hall Conductivity in d-electron systems