Spin Hall effect in a system of Dirac fermions in the honeycomb lattice with intrinsic and Rashba spin-orbit interaction

Abstract

We consider spin Hall effect in a system of massless Dirac fermions in a graphene lattice. Two types of spin-orbit interaction, pertinent to the graphene lattice, are taken into account - the intrinsic and Rashba terms. Assuming perfect crystal lattice, we calculate the topological contribution to spin Hall conductivity. When both interactions are present, their interplay is shown to lead to some peculiarities in the dependence of spin Hall conductivity on the Fermi level.

7 pages, 5 figures

References in corpus (6)

• Dissipationless Quantum Spin Current at Room Temperature
• Intrinsic and Rashba Spin-orbit Interactions in Graphene Sheets
• Graphene with Structure-Induced Spin-Orbit Coupling: Spin-Polarized States, Spin Zero Modes, and Quantum Hall Effect
• Charge and spin Hall conductivity in metallic graphene
• Universal quantized spin-Hall conductance fluctuation in graphene
• Intrinsic spin Hall effect in graphene: Numerical calculations in a multi-orbital mode

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