Evidence for charge transfer and proximate magnetism in graphene/a-RuCl_3 heterostructures

Abstract

We report a study of electronic transport in van der Waals heterostructures composed of flakes of the antiferromagnetic Mott insulator a-RuCl_3 placed on top of monolayer graphene Hall bars. While the zero-field transport shows a strong resemblance to that of isolated graphene, we find a consistently $p$-type Hall effect suggestive of multiband conduction, along with a non-monotonic and gate-voltage-dependent excursion of the resistivity at low temperatures that is reminiscent of transport in the presence of a magnetic phase transition. We interpret these data as evidence for charge transfer from graphene to a-RuCl_3 in an inhomogeneous device yielding both highly- and lightly-doped regions of graphene, while the latter shows a particular sensitivity to magnetism in the a-RuCl_3. Thus proximity to graphene is a means to access magnetic properties of thin layers of magnetic insulators.

References in corpus (33)

• Van der Waals heterostructures
• Fault-tolerant quantum computation by anyons
• Anyons in an exactly solved model and beyond
• Intrinsic and Extrinsic Performance Limits of Graphene Devices on SiO2
• Moire bands in twisted double-layer graphene
• Charged Impurity Scattering in Graphene
• Tuning the graphene work function by electric field effect
• A self-consistent theory for graphene transport
• Measurement of Scattering Rate and Minimum Conductivity in Graphene
• Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid
• Proximate Kitaev Quantum Spin Liquid Behaviour in α-RuCl${}_3$
• $\alpha$-RuCl3: a Spin-Orbit Assisted Mott Insulator on a Honeycomb Lattice
• Neutron tomography of magnetic Majorana fermions in a proximate quantum spin liquid
• Proximity-induced ferromagnetism in graphene revealed by anomalous Hall effect
• Scattering Continuum and Possible Fractionalized Excitations in $\alpha$-RuCl${}_3$
• Spin transport in proximity induced ferromagnetic graphene
• Quantum Anomalous Hall Effect in Graphene Proximity Coupled to an Antiferromagnetic Insulator
• Low-temperature crystal and magnetic structure of $\alpha$-RuCl3
• Strong interfacial exchange field in the graphene/EuS heterostructure
• Evidence for a Field-induced Quantum Spin Liquid in $\alpha$-RuCl${}_3$
• Magnetic Insulator-Induced Proximity Effects in Graphene: Spin Filtering and Exchange Splitting Gaps
• Successive magnetic phase transitions in $\mathbf{\alpha }$-RuCl${}_3$: XY-like frustrated magnet on the honeycomb lattice
• Gapless Spin Excitations in the Field-Induced Quantum Spin Liquid Phase of alpha-RuCl3
• Spin-orbit driven band inversion in bilayer graphene by van der Waals proximity effect
• Anisotropic Ru3+ 4d5 magnetism in the alpha-RuCl3 honeycomb system: susceptibility, specific heat and Zero field NMR
• Mechanical cleaning of graphene
• Observation of two types of anyons in the Kitaev honeycomb magnet
• Proximity effect in graphene-topological insulator heterostructures
• Spin-split band hybridization in graphene proximitized with $\alpha$-RuCl${}_3$ nanosheets
• Possible Structural Transformation and Enhanced Magnetic Fluctuations in Exfoliated $\alpha$-RuCl${}_3$
• Scanning Gate Microscopy on Graphene: Charge Inhomogeneity and Extrinsic Doping
• Proximity induced quantum anomalous Hall effect in graphene/EuO hetero-structures
• Electronic transport and scattering times in tungsten-decorated graphene

Cited by in corpus (42)

• 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
• Local Probes for Charge-Neutral Edge States in Two-Dimensional Quantum Magnets
• 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
• STM as a single Majorana detector of Kitaev's chiral spin liquid
• Spin Photovoltaic Effect in Magnetic van der Waals Heterostructures
• Electrical probes of the non-Abelian spin liquid in Kitaev materials
• 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
• Tunneling spectroscopy as a probe of fractionalization in 2D magnetic heterostructures
• Ultra-sharp lateral $p\text{-}n$ junctions in modulation-doped graphene
• Non-local spin correlation as a signature of Ising anyons trapped in vacancies of the Kitaev spin liquid
• Direct visualization of the charge transfer in Graphene/$\alpha$-RuCl${}_3$ heterostructure
• Probing quantum spin liquids with a quantum twisting microscope
• Magnetoelectric generation of a Majorana-Fermi surface in Kitaev's honeycomb model
• Odd-frequency pair density wave in the Kitaev-Kondo lattice model
• 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
• Flat and Correlated Plasmon Bands in Graphene/$\alpha$-RuCl${}_3$ Heterostructures
• Giant gate-tunable renormalization of spin-correlated flat-band states and bandgap in a 2D magnetic insulator
• 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
• Asymmetric modulation of Majorana excitation spectra and nonreciprocal thermal transport in the Kitaev spin liquid under a staggered magnetic field
• Insulator-to-metal Mott transition facilitated by lattice deformation in monolayer $\alpha$-RuCl${}_3$ on graphite
• Giant anisotropic magnetoresistance in few-layer α-RuCl3 tunnel junctions
• Resonant Inelastic X-ray Scattering from Electronic Excitations in $\alpha$-RuCl${}_3$ Nanolayers
• Exploring the interfacial coupling between graphene and the antiferromagnetic insulator MnPSe${}_3$
• Emergent Hyper-Magic Manifold in Twisted Kitaev Bilayers
• Bi${}_2$Se${}_3$ thin films heteroepitaxially grown on $\alpha$-RuCl${}_3$
• Possible Realization of Kitaev Spin Liquids in van der Waals Heterostructures of $\alpha$-RuCl${}_3$ and Cr$X_3$ ($X$=Cl and I)
• On the origin of anomalous hysteresis in graphite/boron nitride transistors
• Spin and Valley Polarized Multiple Fermi Surfaces of α-RuCl${}_3$/Bilayer Graphene Heterostructure
• Electronic transport mechanisms in a thin crystal of the Kitaev candidate $\alpha$-RuCl${}_3$ probed through guarded high impedance measurements
• Real-time control of non-Abelian anyons in Kitaev spin liquid under energy dissipation
• Ferroelectric switching of interfacial dipoles in $\alpha$-RuCl${}_3$/graphene heterostructure
• Designer quantum matter in van der Waals heterostructures