Single Layer Behavior and Its Breakdown in Twisted Graphene Layers

Abstract

We report high magnetic field scanning tunneling microscopy and Landau level spectroscopy of twisted graphene layers grown by chemical vapor deposition. For twist angles exceeding ~3 degrees the low energy carriers exhibit Landau level spectra characteristic of massless Dirac fermions. Above 20 degrees the layers effectively decouple and the electronic properties are indistinguishable from those in single layer graphene, while for smaller angles we observe a slow-down of the carrier velocity which is strongly angle dependent. At the smallest angles the spectra are dominated by twist induced Van Hove singularities and the Dirac fermions eventually become localized. An unexpected electron-hole asymmetry is observed which is substantially larger than the asymmetry in either single or untwisted bilayer graphene.

10 pages, 4 figures

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Cited by in corpus (263)

• Correlated Insulator Behaviour at Half-Filling in Magic Angle Graphene Superlattices
• The electronic properties of bilayer graphene
• Graphene Bilayers with a Twist
• Spin-half paramagnetism in graphene induced by point defects
• Origin of Magic Angles in Twisted Bilayer Graphene
• Evolution of Interlayer Coupling in Twisted MoS2 Bilayers
• Imaging Electronic Correlations in Twisted Bilayer Graphene near the Magic Angle
• Charge-Order and Broken Rotational Symmetry in Magic Angle Twisted Bilayer Graphene
• Continuum Model of the Twisted Bilayer
• Raman spectroscopy study of rotated double-layer graphene: Misorientation-angle dependence of electronic structure
• Lattice relaxation and energy band modulation in twisted bilayer graphenes
• Tunable Moiré Bands and Strong Correlations in Small-Twist-Angle Bilayer Graphene
• Origin of Mott insulating behavior and superconductivity in twisted bilayer graphene
• Twistronics: Manipulating the Electronic Properties of Two-dimensional Layered Structures through their Twist Angle
• Maximally-localized Wannier orbitals and the extended Hubbard model for the twisted bilayer graphene
• Optical Absorption in Twisted Bilayer Graphene
• Unravelling the intrinsic and robust nature of van Hove singularities in twisted bilayer graphene
• Electronic properties of graphene-based bilayer systems
• Superlattice-induced insulating states and valley-protected orbits in twisted bilayer graphene
• Faithful Tight-binding Models and Fragile Topology of Magic-angle Bilayer Graphene
• Novel effects of strains in graphene and other two dimensional materials
• Nematicity and Competing Orders in Superconducting Magic-Angle Graphene
• Energy Spectrum and Quantum Hall Effect in Twisted Bilayer Graphene
• A mechanism for anomalous Hall ferromagnetism in twisted bilayer graphene
• Band Structure of Twisted Bilayer Graphene: Emergent Symmetries, Commensurate Approximants and Wannier Obstructions
• Numerical studies of confined states in rotated bilayers of graphene
• Electrostatic effects, band distortions and superconductivity in twisted graphene bilayers
• An exact continuum model for low-energy electronic states of twisted bilayer graphene
• Ab-Initio Theory of Moiré Superlattice Bands in Layered Two-Dimensional Materials
• Electronic properties of graphene: a perspective from scanning tunneling microscopy and magneto-transport
• Kohn-Luttinger Superconductivity in Twisted Bilayer Graphene
• Quasicrystalline 30° Twisted Bilayer Graphene as an Incommensurate Superlattice with Strong Interlayer Coupling
• Colloquium: Graphene spectroscopy
• Non-Abelian gauge potentials in graphene bilayers
• Direct imaging of topological edge states at a bilayer graphene domain wall
• Moire Butterflies
• Pressure dependence of the magic twist angle in graphene superlattices
• Strain-induced Evolution of Electronic Band Structures in a Twisted Graphene Bilayer
• Relaxation of moiré patterns for slightly misaligned identical lattices: graphene on graphite
• Electronic Structure Theory of Weakly Interacting Bilayers
• Evidence of Flat Bands and Correlated States in Buckled Graphene Superlattices
• High Thermoelectric Power Factor in Graphene/hBN Devices
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• Electrically controllable magnetism in twisted bilayer graphene
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• Helical networks in twisted bilayer graphene under interlayer bias
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• Direct experimental evidence of pi magnetism of a single atomic vacancy in graphene
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• Structural and electronic transformation in low-angle twisted bilayer graphene
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• Van Hove Singularities and Excitonic Effects in the Optical Conductivity of Twisted Bilayer Graphene
• Local spectroscopy of moiré-induced electronic structure in gate-tunable twisted bilayer graphene
• Band Symmetries and Singularities in Twisted Multilayer Graphene
• Dynamical conductivity of AA-stacked bilayer graphene
• Electronic spectrum of twisted bilayer graphene
• Topologically Protected Zero Modes in Twisted Bilayer Graphene
• Topological Bloch Bands in Graphene Superlattices
• Proximity effect in graphene-topological insulator heterostructures
• Moiré phonons in the twisted bilayer graphene
• Valley Polarization and Inversion in Strained Graphene via Pseudo-Landau Levels, Valley Splitting of Real Landau Levels and Confined States
• Optical conductivity, Drude weight and plasmons in twisted graphene bilayers
• Structure of twisted and buckled bilayer graphene
• Breakdown of the interlayer coherence in twisted bilayer graphene
• Observation of Helical Edge States and Fractional Quantum Hall Effect in a Graphene Electron-hole Bilayer
• 30${}^{\circ }$-twisted bilayer graphene quasicrystals from chemical vapor deposition
• Heterostrain engineering on twisted graphene bilayer around the first magic angle
• Optical Conductivity of Twisted Bilayer Graphene
• Graphene on Hexagonal Boron Nitride
• Superlattice structures in twisted bilayers of folded graphene
• Landau Quantization in Graphene Monolayer, Bernal Bilayer, and Bernal Trilayer on Graphite Surface
• Chiral Tunnelling in Twisted Graphene Bilayer
• Disorder in Twisted Bilayer Graphene
• Quasi-flat plasmonic bands in twisted bilayer graphene
• Experimental evidence for non-Abelian gauge potentials in twisted graphene bilayers
• Electronic Hybridization of Large-Area Stacked Graphene Films
• Electronic Properties of Twisted Trilayer Graphene
• Interlayer coupling in rotationally faulted multilayer graphenes
• θ-Tunable Photoluminescence from Interlayer Excitons in Twisted Bilayer Graphene
• Charge Smoothening and Band Flattening due to Hartree corrections in Twisted Bilayer Graphene
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• Dodecagonal bilayer graphene quasicrystal and its approximants
• Landau Quantization and Fermi Velocity Renormalization in Twisted Graphene Bilayers
• Pairing symmetry and spontaneous vortex-antivortex lattice in superconducting twisted-bilayer graphene: Bogoliubov-de Gennes approach
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• STM Study of Quantum Hall Isospin Ferromagnetic States of Zero Landau Level in Graphene Monolayer
• Screening Charged Impurities and Lifting the Orbital Degeneracy in Graphene by Populating Landau Levels
• KITE: high-performance accurate modelling of electronic structure and response functions of large molecules, disordered crystals and heterostructures
• Charge redistribution and interlayer coupling in twisted bilayer graphene under electric fields
• Derivation of Wannier orbitals and minimal-basis tight-binding hamiltonians for twisted bilayer graphene: a first-principles approach
• Photonic spin Hall effect in bilayer graphene Moiré superlattices
• Seebeck Coefficient of a Single van der Waals Junction in Twisted Bilayer Graphene
• The Electronic Thickness of Graphene
• Observation of Landau level-like quantizations at 77 K along a strained-induced graphene ridge
• Experimental evidence for orbital magnetic moments generated by moiré-scale current loops in twisted bilayer graphene
• Phonon mediated interlayer conductance in twisted graphene bilayers
• Strong Coupling Theory of Magic-Angle Graphene: A Pedagogical Introduction
• Strongly bound excitons dominate electronic relaxation in resonantly excited twisted bilayer graphene
• Angle-Dependent van Hove Singularities and Their Breakdown in Twisted Graphene Bilayers
• Gap Opening in Twisted Double Bilayer Graphene by Crystal fields
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• Incommensurate double-walled carbon nanotubes as one-dimensional moiré crystals
• Flat bands in magic-angle vibrating plates
• Twisting Dirac fermions: Circular dichroism in bilayer graphene
• Real-space imaging of the tailored plasmons in twisted bilayer graphene
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• Manipulation of Dirac points in graphene-like crystals
• Quantum Critical Transition and Kondo Screening of Magnetic Moments in Graphene
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• Transport measurements in twisted bilayer graphene: Electron-phonon coupling and Landau level crossing
• Tuning Structures and Electronic Spectra of Graphene Layers by Tilt Grain Boundaries
• Theory of the Raman spectrum of rotated double-layer graphene
• DC conductivity of twisted bilayer graphene: Angle-dependent transport properties and effects of disorder
• Optical absorption of twisted bilayer graphene with interlayer potential asymmetry
• Magnetism near half-filling of a van Hove singularity in twisted graphene bilayer
• Direct growth of mm-size twisted bilayer graphene by plasma-enhanced chemical vapor deposition
• T-carbon: experiments, properties, derivatives and potential applications
• Flat band carrier confinement in magic-angle twisted bilayer graphene
• Twisted bilayer zigzag-graphene nanoribbon junctions with tunable edge states
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• Externally controlled band gap in twisted bilayer graphene
• Floquet-Engineered Topological Flat Bands in Irradiated Twisted Bilayer Graphene
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• Local and Global Screening Properties of Graphene Revealed through Landau Level Spectroscopy
• Moiré patterns on STM images of graphite from surface and subsurface rotated layer
• Emergent geometric frustration and flat band in moiré bilayer graphene
• Scanning tunneling microscopy and spectroscopy of twisted trilayer graphene
• Creating Magnetic Fields in excess of 1000 T by Misoriented Stacking in a Graphene Bilayer
• Angle Dependence of Landau Level Spectrum in Twisted Bilayer Graphene
• Twistronics in graphene-based van der Waals structures
• The Coexistence of van Hove Singularities and Superlattice Dirac Points in a Slightly Twisted Graphene Bilayer
• Optical properties of the Hofstadter butterfly in the Moiré superlattice
• Structural stability and energy-gap modulation through atomic protrusion in freestanding bilayer silicene
• Twisted bilayer graphene in a parallel magnetic field
• Bilayer graphene with parallel magnetic field and twisting: Phases and phase transitions in a highly tunable Dirac system
• Giant Current-Perpendicular-to-Plane Magnetoresistance in Multilayer Graphene as Grown on Nickel
• Single-electron gap in the spectrum of twisted bilayer graphene
• Flat Bands near Fermi Level of Topological Line Defects on Graphite
• Moiré disorder effect in twisted bilayer graphene
• High-magnetic-field Tunneling Spectra of ABC-Stacked Trilayer Graphene
• Electronic properties of asymmetrically doped twisted graphene bilayers
• Point Defects in Twisted Bilayer Graphene: A Density Functional Theory Study
• Enhanced Intervalley Scattering of Twisted Bilayer Graphene by Periodic AB Stacked Atoms
• Emergent magnetic texture in driven twisted bilayer graphene
• Stacking transition in bilayer graphene caused by thermally activated rotation
• Observation of strain-free rolled-up CVD graphene single layers: towards unstrained heterostructures
• Lowest-energy Moiré Band Formed by Dirac Zero Modes in Twisted Bilayer Graphene
• Electronic transition from graphite to graphene via controlled movement of the top layer with scanning tunneling microscopy
• The Coherent Interlayer Resistance of a Single, Rotated Interface between Two Stacks of AB Graphite
• Emergent correlated phases in rhombohedral trilayer graphene induced by proximity spin-orbit and exchange coupling
• Optical Phonons in Twisted Bilayer Graphene with Gate-Induced Asymmetric Doping
• Observation of Chirality Transition of Quasiparticles at Stacking Solitons in Trilayer Graphene
• Severe Dirac Mass Gap Suppression in Sb_2Te_3-based Quantum Anomalous Hall Materials
• Towards scalable nano-engineering of graphene
• Landau Quantization in Twisted Bilayer Graphenes: the Dirac Comb
• Moiré edge states in twisted graphene nanoribbons
• Turbostratic graphitic microstructures: electronically decoupled multilayer graphene devices with robust high charge carrier mobility
• Raman imaging of twist angle variations in twisted bilayer graphene at intermediate angles
• An atomistic insight into moiré reconstruction in Twisted Bilayer Graphene beyond the magic angle
• Analytical Model for Atomic Relaxation in Twisted Moiré Materials
• Electronic conductance of twisted bilayer nanoribbon flakes
• Topological flat bands without magic angles in massive twisted bilayer graphenes
• Novel Magnetic Quantization of sp${}^3$ Bonding in Monolayer Tinene
• Probing interlayer interactions and commensurate-incommensurate transition in twisted bilayer graphene through Raman spectroscopy
• Strain-induced modulation of Dirac cones and van Hove singularities in twisted graphene bilayer
• High transmission in twisted bilayer graphene with angle disorder
• Berry Phase Transition in Twisted Bilayer Graphene
• Single-layer behavior and slow carrier density dynamic of twisted graphene bilayer
• Two Distinct Phases of Bilayer Graphene Films on Ru(0001)
• Magnetic-field-controlled negative differential conductance in graphene npn junction resonators
• Duality between atomic configurations and Bloch states in twistronic materials
• Nano-scale displacement sensing based on Van der Waals interaction
• Moiré phonons in graphene/hexagonal boron nitride moiré superlattice
• Spatially resolving unconventional interface Landau quantization in a graphene monolayer-bilayer planar junction
• Unfolding energy spectra of multi-periodicity materials
• Chiral limits and effect of light on the Hofstadter butterfly in twisted bilayer graphene
• Possible nodeless $s^{\pm }$-wave superconductivity in twisted bilayer graphene
• Spatial Confinement, Magnetic Localization and Their Interactions on Massless Dirac Fermions
• Coexistence of Reconstructed and Unreconstructed Structures in Structural Transition Regime of Twisted Bilayer Graphene
• Exotic dielectric behaviors induced by pseudo-spin texture in magnetic twisted bilayer
• Origin of layer number dependent linear and nonlinear optical properties of two-dimensional graphene-like SiC
• Characterization and manipulation of intervalley scattering induced by an individual monovacancy in graphene
• Magnetic skyrmion crystal at a topological insulator surface
• Spatial and Magnetic Confinement of Massless Dirac Fermions
• Prominent Cooper Pairing Away From the Fermi Level and its Spectroscopic Signature in Twisted Bilayer Graphene
• Electronic structure and quantum transport in twisted bilayer graphene with resonant scatterers
• Ab-initio analysis of superstructures revealed by STM on bilayer graphene
• Strain-induced conduction gap in vertical devices made of twisted graphene layers
• Multiple negative differential conductance regions and inelastic phonon assisted tunneling in graphene-hBN-graphene structures
• Stabilization of Topological Insulator Emerging from Electron Correlations on Honeycomb Lattice and Its Possible Relevance in Twisted Bilayer Graphene
• Quantum capacitive coupling between large-angle twisted graphene layers
• Electron-phonon scattering and in-plane electric conductivity in twisted bilayer graphene
• Valley and spin polarized broken symmetry states of interacting electrons in gated MoS${}_2$ quantum dots
• Optoelectronic Fingerprints of Interference between Different Charge Carriers in Graphene Superlattices and Analogies to Twisted Graphene Bilayers
• Nonlinear intensity dependence of photogalvanics and photoconductance induced by terahertz laser radiation in twisted bilayer graphene close to magic angle
• Time-evolution patterns of electrons in twisted bilayer graphene
• Spin liquid in twisted homobilayers group-VI gichalcogenides
• Magnetic-impurity resonance states for different pairing symmetries in twisted bilayer graphene
• Twisted bilayer BC${}_3$: Valley interlocked anisotropic flat bands
• Tunable zero-energy transmission resonances in shifted graphene bilayer
• Superconductivity in twisted multilayer graphene: a smoking gun in recent condensed matter physics
• Angle-Tuned Gross-Neveu Quantum Criticality in Twisted Bilayer Graphene: A Quantum Monte Carlo Study
• Electrostatic Imaging of Encapsulated Graphene
• Twisted bilayer graphene at charge neutrality: competing orders of SU(4) Dirac fermions
• Stacking-configuration-enriched essential properties in bilayer silicenes
• Landau quantization in buckled monolayer GaAs
• Progress on band structure engineering of twisted bilayer and two-dimensional moiré heterostructures
• In-plane Chiral Tunneling and Out-of-plane Valley-polarized Quantum Tunneling in Twisted Graphene Trilayer
• Evolution of the electronic band structure of twisted bilayer graphene upon doping
• Strain impacts on commensurate bilayer graphene superlattices: distorted trigonal warping, emergence of bandgap and direct-indirect bandgap transition
• Mesoscopic Electronic Transport in Twisted Bilayer Graphene
• Moiré-Induced Transport in CVD-Based Small-Angle Twisted Bilayer Graphene
• Anisotropic strain effects in small-twist-angle graphene on graphite
• Generalized parafermions and non-local Josephson effect in multi-layer systems
• Moir{é} pattern assisted geometric resonant tunneling in disordered twisted bilayer graphene
• Valley splitter and transverse valley focusing in twisted bilayer graphene
• Transmission across a bilayer graphene region
• Why twisting angles are diverse in graphene Moire patterns?
• Nodal Surfaces in Photoemission from Twisted Bilayer Graphene
• NMR determination of Van Hove singularity and Lifshitz transitions in nodal-line semimetal ZrSiTe
• Competing scanning tunneling microscope tip-interlayer interactions for twisted multilayer graphene on the a-plane SiC surface
• Periodic arrays of intercalated atoms in twisted bilayer graphene: an \it{ ab initio} investigation
• Gross-Neveu-XY quantum criticality in moiré Dirac materials
• Electronic Structures and Their Landau Quantizations in Twisted Graphene Bilayer and Trilayer
• Twisted Bilayer Graphene Superlattices
• Angle Dependent Interlayer Magnetoresistance (ILMR) in Multilayer Graphene Stacks
• Vacancy-induced tunable Kondo effect in twisted bilayer graphene
• Brownian dynamics of Dirac fermions in twisted bilayer graphene
• Spatially resolved electronic structure of twisted graphene
• Electronic structure and transport in materials with flat bands: 2D materials and quasicrystals
• Effective-mass theory of collapsed carbon nanotubes
• Coexistence of Van Hove Singularities and Pseudomagnetic Fields in Modulated Graphene Bilayer
• Featuring nuanced electronic band structure in gapped multilayer graphene
• Low-temperature thermal transport in moiré superlattices
• Excitonic effects in twisted bilayer graphene
• Machine Learning-based Automatic Graphene Detection with Color Correction for Optical Microscope Images
• Optical Properties of Graphene in Magnetic and Electric fields
• Exceptional topology in non-Hermitian twisted bilayer graphene
• Exploring interlayer Dirac cone coupling in commensurately rotated few-layer graphene on SiC(000-1)
• Tetrahedral Bonding in Twisted Bilayer Graphene by Carbon Intercalation
• Coulomb drag in metallic twisted bilayer graphene
• Photon absorption in twisted bilayer graphene
• DFT+U+V Study of Magnetic Ordering in Single-Layer Pentahexoctite: Implications for Magnetic Device Platforms
• Solvable lattice models for metals with Z2 topological order
• Magnetically Controlling the Explosion of Dirac Fermions during the Oxidation of Graphene
• Terahertz Landau level spectroscopy of Dirac fermions in millimeter-scale twisted bilayer graphene
• Topologically protected one-dimensional electronic states in group IV two-dimensional Dirac materials
• Tunable lattice reconstruction and bandwidth of flat bands in magic-angle twisted bilayer graphene
• Ion-Implanted ${}^8$Li Nuclear Magnetic Resonance in Highly Oriented Pyrolytic Graphite
• Electrical Conductivity of Copper-Graphene (Cu-Gr) Composites: The Underlying Mechanisms of Ultrahigh Conductivity
• Twisted bi-layer graphene: microscopic rainbows
• Magnetic quantization in multilayer graphenes
• Emergent exotic chirality dependent dielectricity in magnetic twisted bilayer system
• Strain Engineering of van Hove Singularity and Coupled Itinerant Ferromagnetism in Quasi-2D Oxide Superlattices
• Visualizing Encapsulated Graphene, its Defects and its Charge Environment by Sub-Micrometer Resolution Electrical Imaging
• Electric charge and potential distribution in twisted multilayer graphene
• Hofstadter Butterfly in Graphene
• Insulating Electronic States Near the Dirac Point Arising from Twisted Stacking and Curvature in 3D Nanoporous Graphene
• Geometric and Electronic Properties of Li${}_2$GeO${}_3$
• Atomic frustration-based twistronics