Features due to spin-orbit coupling in the optical conductivity of single-layer graphene

Abstract

We have calculated the optical conductivity of a disorder-free single graphene sheet in the presence of spin-orbit coupling, using the Kubo formalism. Both intrinsic and structural-inversion-asymmetry induced types of spin splitting are considered within a low-energy continuum theory. Analytical results are obtained that allow us to identify distinct features arising from spin-orbit couplings. We point out how optical-conductivity measurements could offer a way to determine the strengths of spin splitting due to various origins in graphene.

7 pages, 5 figures, RevTex4; v2: added/updated references, changed figures, extended Introduction section; to appear in PRB

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• Spin-resolved scattering through spin-orbit nanostructures in graphene
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• Trigonal warping and anisotropic band splitting in monolayer graphene due to Rashba spin-orbit coupling
• Spin dephasing and pumping in graphene due to random spin-orbit interaction
• Dielectric function, screening, and plasmons of graphene in the presence of spin-orbit interactions
• Interplay between spin-orbit interactions and a time-dependent electromagnetic field in monolayer graphene
• Dynamical current-current susceptibility of gapped graphene
• Magneto-optical and optical probes of gapped ground states of bilayer graphene
• Infrared to terahertz optical conductivity of $n$-type and $p$-type monolayer MoS${}_2$ in the presence of Rashba spin-orbit coupling
• Terahertz Dynamics of Quantum-Confined Electrons in Carbon Nanomaterials
• Enhanced photogalvanic effect in graphene due to Rashba spin-orbit coupling
• Optical spin injection in graphene with Rashba spin-orbit interaction
• Quantum Spin Hall Effect in Graphene Nanoribbons: Effect of Edge Geometry
• Modified spin-orbit couplings in uniaxially strained graphene