Electronic properties of α-RuCl3 in proximity to graphene

Abstract

In the pursuit of developing routes to enhance magnetic Kitaev interactions in α-RuCl3, as well as probing doping effects, we investigate the electronic properties of α-RuCl3 in proximity to graphene. We study α-RuCl3/graphene heterostructures via ab initio density functional theory calculations, Wannier projection and non-perturbative exact diagonalization methods. We show that α-RuCl3 becomes strained when placed on graphene and charge transfer occurs between the two layers, making α-RuCl3 (graphene) lightly electron-doped (hole-doped). This gives rise to an insulator to metal transition in α-RuCl3 with the Fermi energy located close to the bottom of the upper Hubbard band of the t2g manifold. These results suggest the possibility of realizing metallic and even exotic superconducting states. Moreover, we show that in the strained α-RuCl3 monolayer the Kitaev interactions are enhanced by more than 50% compared to the unstrained bulk structure. Finally, we discuss scenarios related to transport experiments in α-RuCl3/graphene heterostructures.

11 pages, 3 figures Further calculation details included

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Cited by in corpus (40)

• Hunting Majorana Fermions in Kitaev Magnets
• Materials design of Kitaev spin liquids beyond the Jackeli-Khaliullin mechanism
• Graphene/$\alpha$-RuCl${}_3$: An Emergent 2D Plasmonic Interface
• Modulation Doping via a 2d Atomic Crystalline Acceptor
• Tunneling spectroscopy of quantum spin liquids
• Great enhancement of Curie temperature and magnetic anisotropy in two-dimensional van der Waals magnetic semiconductor heterostructures
• XY magnetism, Kitaev exchange, and long-range frustration in the $J_{\mathrm{eff}}=1/2$ honeycomb cobaltates
• Magnetic anisotropy reversal driven by structural symmetry-breaking in monolayer α-RuCl3
• Magnetoelastic coupling and effects of uniaxial strain in $\alpha$-RuCl${}_3$ from first principles
• Nanometer-scale lateral p-n junctions in graphene/$\alpha$-RuCl${}_3$ heterostructures
• Towards Kitaev Spin Liquid in 3d Transition Metal Compounds
• Anomalous Quantum Oscillations in a Heterostructure of Graphene on a Proximate Quantum Spin Liquid
• Ultra-sharp lateral $p\text{-}n$ junctions in modulation-doped graphene
• Magnetic Anisotropy in Two-dimensional van der Waals Magnetic Materials and Their Heterostructures: Importance, Mechanisms, and Opportunities
• Direct visualization of the charge transfer in Graphene/$\alpha$-RuCl${}_3$ heterostructure
• Non-Abelian chiral spin liquid on a simple non-Archimedean lattice
• Quantum liquids of the S=3/2 Kitaev honeycomb and related Kugel-Khomskii models
• Tunneling spectroscopic signatures of charge doping and associated Mott transition in $\alpha$-RuCl${}_3$ in proximity to graphite
• Quadrupolar spin liquid, octupolar Kondo coupling and odd-frequency superconductivity in an exactly solvable model
• Comparing the influence of Floquet dynamics in various Kitaev-Heisenberg materials
• Designing spin-textured flat bands in twisted graphene multilayers via helimagnet encapsulation
• Flat and Correlated Plasmon Bands in Graphene/$\alpha$-RuCl${}_3$ Heterostructures
• Magnetic anisotropy energies and metal-insulator transitions in monolayers of $\alpha$-RuCl${}_3$ and OsCl${}_3$ on graphene
• Magnetic States of Graphene Proximitized Kitaev Materials
• Growth of self-integrated atomic quantum wires and junctions of a Mott semiconductor
• Insulator-to-metal Mott transition facilitated by lattice deformation in monolayer $\alpha$-RuCl${}_3$ on graphite
• From linear to circular polarized light -- Floquet engineering in Kitaev-Heisenberg materials with Lissajous figures
• Giant anisotropic magnetoresistance in few-layer α-RuCl3 tunnel junctions
• Emergent Hyper-Magic Manifold in Twisted Kitaev Bilayers
• Resonant Inelastic X-ray Scattering from Electronic Excitations in $\alpha$-RuCl${}_3$ Nanolayers
• Mott Gap Softening Coinciding with Spin Correlations Collapse in a-RuCl3
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• Exfoliation and Optical Properties of S=1 Triangular Lattice Antiferromagnet NiGa${}_2$S${}_4$
• Possible Realization of Kitaev Spin Liquids in van der Waals Heterostructures of $\alpha$-RuCl${}_3$ and Cr$X_3$ ($X$=Cl and I)
• Spin and Valley Polarized Multiple Fermi Surfaces of α-RuCl${}_3$/Bilayer Graphene Heterostructure
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• Signature of Topological Semimetal in Harmonic-honeycomb ReO3
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