Spin-split band hybridization in graphene proximitized with $\alpha$-RuCl${}_3$ nanosheets

Abstract

Proximity effects induced in the 2D Dirac material graphene potentially open access to novel and intriguing physical phenomena. Thus far, the coupling between graphene and ferromagnetic insulators has been experimentally established. However, only very little is known about graphene's interaction with antiferromagnetic insulators. Here, we report a low temperature study of the electronic properties of high quality van der Waals heterostructures composed of a single graphene layer proximitized with $\alpha$-RuCl${}_3$. The latter is known to become antiferromagnetically ordered below 10 K. Shubnikov de Haas oscillations in the longitudinal resistance together with Hall resistance measurements provide clear evidence for a band realignment that is accompanied by a transfer of electrons originally occupying the graphene's spin degenerate Dirac cones into $\alpha$-RuCl${}_3$ band states with in-plane spin polarization. Left behind are holes in two separate Fermi pockets, only the dispersion of one of which is distorted near the Fermi energy due to spin selective hybridization with these spin polarized $\alpha$-RuCl${}_3$ band states. This interpretation is supported by our DFT calculations. An unexpected damping of the quantum oscillations as well as a zero field resistance upturn close to the N$\acute{e}$el temperature of $\alpha$-RuCl${}_3$ suggests the onset of additional spin scattering due to spin fluctuations in the $\alpha$-RuCl${}_3$.

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Cited by in corpus (46)

• 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
• Evidence for charge transfer and proximate magnetism in graphene/a-RuCl_3 heterostructures
• Charge-transfer Contact to a High-Mobility Monolayer Semiconductor
• Modulation Doping via a 2d Atomic Crystalline Acceptor
• Electronic properties of α-RuCl3 in proximity to graphene
• Local Probes for Charge-Neutral Edge States in Two-Dimensional Quantum Magnets
• Tunneling spectroscopy of quantum spin liquids
• XY magnetism, Kitaev exchange, and long-range frustration in the $J_{\mathrm{eff}}=1/2$ honeycomb cobaltates
• Quantum Hall phase in graphene engineered by interfacial charge coupling
• $\text{Ab Initio}$ Mismatched Interface Theory of Graphene on $\alpha$-RuCl${}_3$: Doping and Magnetism
• Spin Photovoltaic Effect in Magnetic van der Waals Heterostructures
• STM as a single Majorana detector of Kitaev's chiral spin liquid
• Electrical probes of the non-Abelian spin liquid in Kitaev materials
• Spin dynamics slowdown near the antiferromagnetic critical point in atomically thin FePS3
• 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
• Majorana-mediated spin transport without spin polarization in Kitaev quantum spin liquids
• 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
• Direct visualization of the charge transfer in Graphene/$\alpha$-RuCl${}_3$ heterostructure
• Magnetoelectric generation of a Majorana-Fermi surface in Kitaev's honeycomb model
• Strong magnetic proximity effect in Van der Waals heterostructures driven by direct hybridization
• Band Gap Opening in Bilayer Graphene-CrCl${}_3$/CrBr${}_3$/CrI${}_3$ van der Waals Interfaces
• Tunneling spectroscopic signatures of charge doping and associated Mott transition in $\alpha$-RuCl${}_3$ in proximity to graphite
• Exchange-bias controlled correlations in magnetically encapsulated twisted van der Waals dichalcogenides
• Designing spin-textured flat bands in twisted graphene multilayers via helimagnet encapsulation
• Magnetic anisotropy energies and metal-insulator transitions in monolayers of $\alpha$-RuCl${}_3$ and OsCl${}_3$ on graphene
• Flat and Correlated Plasmon Bands in Graphene/$\alpha$-RuCl${}_3$ Heterostructures
• Frustrated Kondo impurity triangle: A simple model of deconfinement
• Asymmetric modulation of Majorana excitation spectra and nonreciprocal thermal transport in the Kitaev spin liquid under a staggered magnetic field
• Magnetic States of Graphene Proximitized Kitaev Materials
• Insulator-to-metal Mott transition facilitated by lattice deformation in monolayer $\alpha$-RuCl${}_3$ on graphite
• Drag resistance mediated by quantum spin liquids
• Giant anisotropic magnetoresistance in few-layer α-RuCl3 tunnel junctions
• Roller-Coaster in a Flatland: Magnetoresistivity in Eu-intercalated Graphite
• Magnetostriction of α-RuCl3 flakes in the zigzag phase
• Resonant Inelastic X-ray Scattering from Electronic Excitations in $\alpha$-RuCl${}_3$ Nanolayers
• Exploring the interfacial coupling between graphene and the antiferromagnetic insulator MnPSe${}_3$
• Possible Realization of Kitaev Spin Liquids in van der Waals Heterostructures of $\alpha$-RuCl${}_3$ and Cr$X_3$ ($X$=Cl and I)
• Bi${}_2$Se${}_3$ thin films heteroepitaxially grown on $\alpha$-RuCl${}_3$
• Real-time control of non-Abelian anyons in Kitaev spin liquid under energy dissipation
• Spin and Valley Polarized Multiple Fermi Surfaces of α-RuCl${}_3$/Bilayer Graphene Heterostructure
• Ferroelectric switching of interfacial dipoles in $\alpha$-RuCl${}_3$/graphene heterostructure
• Designer quantum matter in van der Waals heterostructures