Longitudinal and spin/valley Hall optical conductivity in single layer $Mo{S}_2$

Abstract

A monolayer of $Mo{S}_2$ has a non-centrosymmetric crystal structure, with spin polarized bands. It is a two valley semiconductor with direct gap falling in the visible range of the electromagnetic spectrum. Its optical properties are of particular interest in relation to valleytronics and possible device applications. We study the longitudinal and the transverse Hall dynamical conductivity which is decomposed into charge, spin and valley contributions. Circular polarized light associated with each of the two valleys separately is considered and results are filtered according to spin polarization. Temperature can greatly change the spin admixture seen in the frequency window where they are not closely in balance.

8 pages, 5 figures, accepted by Phys. Rev. B

References in corpus (25)

• Electric Field Effect in Atomically Thin Carbon Films
• The electronic properties of graphene
• Atomically thin MoS2: A new direct-gap semiconductor
• Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
• Two Dimensional Atomic Crystals
• Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
• Control of valley polarization in monolayer MoS2 by optical helicity
• Valley polarization in MoS2 monolayers by optical pumping
• Graphene plasmonics: A platform for strong light-matter interaction
• MoS_2 as an ideal material for valleytronics: valley-selective circular dichroism and valley Hall effect
• Valley contrasting physics in graphene: magnetic moment and topological transport
• Plasmonics in graphene at infra-red frequencies
• Gate-tuning of graphene plasmons revealed by infrared nano-imaging
• Optical nano-imaging of gate-tuneable graphene plasmons
• Valley filter and valley valve in graphene
• Electron-Electron Interactions in Graphene: Current Status and Perspectives
• Valley Dependent Optoelectronics from Inversion Symmetry Breaking
• Semiconductor Spintronics
• Unusual Microwave Response of Dirac Quasiparticles in Graphene
• Giant Magneto-optical Kerr Effect and Universal Faraday Effect in Thin-film Topological Insulators
• Intrinsic spin Hall effect in monolayers of group-VI dichalcogenides: A first-principles study
• Fields radiated by a nanoemitter in a graphene sheet
• Optical conductivity of bilayer graphene with and without an asymmetry gap
• Optical Signatures of the Tunable Band Gap and Valley-Spin Coupling in Silicene
• Effect of Holstein phonons on the electronic properties of graphene

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• Effect of Point Defects on the Optical and Transport Properties of MoS2 and WS2
• Effect of electron-hole asymmetry on optical conductivity in 8-Pmmn borophene
• AC/DC Spin and Valley Hall Effects in Silicene and Germanene
• Chiral plasmon in gapped Dirac systems
• Valley Contrasting Magnetoluminescence in Monolayer MoS${}_2$ Quantum Hall Systems
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• All-optical injection of charge, spin and valley currents in monolayer transition metal dichalcogenides
• Infrared to terahertz optical conductivity of $n$-type and $p$-type monolayer MoS${}_2$ in the presence of Rashba spin-orbit coupling
• Strong anisotropic optical conductivity in two dimensional puckered structures: The role of Rashba effect
• Dynamical optical conductivity for gapped $\alpha -{\mathcal{T}}_3$ materials with a curved "flat" band
• Phonon structure in dispersion curves and density of states of massive Dirac Fermions
• Signatures of Lifshitz transition in the optical conductivity of two-dimensional tilted Dirac materials
• Impact of chemical potential on the reflectance of graphene in the infrared and microwave domains
• Conductivity of Dirac fermions with phonon induced topological crossover
• Valley Hall Transport of Photon-Dressed Quasiparticles in 2D Dirac Semiconductors
• Optical Conductivity of Topological Insulator Thin Films in a Quantizing Magnetic Field
• Origin of the repulsive Casimir force in giant polarization-interconversion materials
• Optical induced Spin Current in Monolayer NbSe${}_2$
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• Nonlocal optical conductivity of Fermi surface nesting materials
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• Electron-phonon correlations on spin texture of gapped helical Dirac Fermions
• Controllable intrinsic DC spin/valley Hall conductivity in ferromagnetic silicene: Exploring a fully spin/valley polarized transport
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• Multi-component plasmons in monolayer MoS${}_2$ with circularly polarized optical pumping
• Magneto-optical conductivity of monolayer transition metal dichalcogenides in the presence of proximity-induced exchange interaction and external electrical field
• Decoding the DC and optical conductivities of disordered MoS${}_2$ films: an inverse problem
• Control of valley optical conductivity and topological phases in buckled hexagonal lattice by orientation of in-plane magnetic field
• Optically induced spin Hall current in Janus transition-metal dichalcogenides
• Perfect valley polarization in MoS2
• Longitudinal and transverse mobilities of $n$-type monolayer transition metal dichalcogenides in the presence of proximity-induced interactions at low temperature
• Cyclotron Resonance in Topological Insulators: Non-Relativistic Effects
• Anomalous Behaviour in the Magneto-Optics of a Gapped Topological Insulator
• Topologically induced fractional Hall steps in the integer quantum Hall regime of $Mo{S}_2$
• Vanishing of interband light absorption in a persistent spin helix state
• Optical spectrum of $n$-type and $p$-type monolayer MoS${}_2$ in the presence of proximity-induced interactions