Tunable van Hove Singularities and Correlated States in Twisted Trilayer Graphene

Abstract

Understanding and tuning correlated states is of great interest and significance to modern condensed matter physics. The recent discovery of unconventional superconductivity and Mott-like insulating states in magic-angle twisted bilayer graphene (tBLG) presents a unique platform to study correlation phenomena, in which the Coulomb energy dominates over the quenched kinetic energy as a result of hybridized flat bands. Extending this approach to the case of twisted multilayer graphene would allow even higher control over the band structure because of the reduced symmetry of the system. Here, we study electronic transport properties in twisted trilayer graphene (tTLG, bilayer on top of monolayer graphene heterostructure). We observed the formation of van Hove singularities which are highly tunable by twist angle and displacement field and can cause strong correlation effects under optimum conditions, including superconducting states. We provide basic theoretical interpretation of the observed electronic structure.

16 pages, 9 figures

References in corpus (6)

• 2D materials and van der Waals heterostructures
• Superlattice-induced insulating states and valley-protected orbits in twisted bilayer graphene
• Entropic evidence for a Pomeranchuk effect in magic angle graphene
• Gate-induced interlayer asymmetry in ABA-stacked trilayer graphene
• Transport studies of dual-gated ABC and ABA trilayer graphene: band gap opening and band structure tuning in very large perpendicular electric field
• Electronic Properties of Twisted Trilayer Graphene

Cited by in corpus (73)

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• Unconventional Superconductivity in Magic-Angle Twisted Trilayer Graphene
• Emergence of Correlations in Alternating Twist Quadrilayer Graphene
• Local atomic stacking and symmetry in twisted graphene trilayers
• Dynamical correlations and order in magic-angle twisted bilayer graphene
• Mixed-Stacking Few-Layer Graphene as an Elemental Weak Ferroelectric Material
• Imaging topological torus lattice from an electron crystal in twisted mono-bilayer graphene
• Supermoiré low-energy effective theory of twisted trilayer graphene
• A scalable network model for electrically tunable ferroelectric domain structure in twistronic bilayers of two-dimensional semiconductors
• TSTG I: Single-Particle and Many-Body Hamiltonians and Hidden Non-local Symmetries of Trilayer Moiré Systems with and without Displacement Field
• Topological flat bands in rhombohedral tetralayer and multilayer graphene on hexagonal boron nitride moire superlattices
• Surface ferromagnetism in rhombohedral heptalayer graphene moire superlattice
• Tunable quantum criticalities in an isospin extended Hubbard model simulator
• Observation of Coexisting Dirac Bands and Moiré Flat Bands in Magic-Angle Twisted Trilayer Graphene
• Spin polarized nematic order, quantum valley Hall states, and field tunable topological transitions in twisted multilayer graphene systems
• Topological electronic crystals in twisted bilayer-trilayer graphene
• Spectroscopic visualization of flat bands in magic-angle twisted monolayer-bilayer graphene: localization-delocalization coexisting electronic states
• Stacking and gate tunable topological flat bands, gaps and anisotropic strip patterns in twisted trilayer graphene
• Layer-dependent evolution of electronic structures and correlations in rhombohedral multilayer graphene
• The discovery of three-dimensional Van Hove singularity
• Multilayer graphene with a superlattice potential
• Valley-selective Floquet Chern Flat Bands in Twisted Multilayer Graphene
• Commensurate and incommensurate double moiré interference in twisted trilayer graphene
• Local spectroscopy of a gate-switchable moiré quantum anomalous Hall insulator
• Alternating twisted mutilayer graphene: generic partition rules, double flat bands, and orbital magnetoelectric effect
• Mixed-dimensional moiré systems of graphitic thin films with a twisted interface
• Analytical Model for Atomic Relaxation in Twisted Moiré Materials
• Moire Band Structures of the Double twisted Few Layer Graphene
• Flat bands, electron interactions and magnetic order in magic-angle mono-trilayer graphene
• $\text{Ab initio}$ four-band Wannier tight-binding model for generic twisted graphene systems
• Full Slonczewski-Weiss-McClure parametrization of few-layer twistronic graphene
• Self-organised quantum dots in marginally twisted MoSe${}_2$/WSe${}_2$ and MoS${}_2$/WS${}_2$ bilayers
• ARPES signatures of few-layer twistronic graphenes
• Multi-layered atomic relaxation in van der Waals heterostructures
• Temperature-linear Resistivity in Twisted Double Bilayer Graphene
• Topological Flat Bands in Graphene Super-moiré Lattices
• Superconducting Orbital Magnetoelectric Effect and its Evolution across the Superconductivity Normal Metal Phase Transition
• Engineering Three Dimensional Moiré Flat Bands
• Charge density wave and finite-temperature transport in minimally twisted bilayer graphene
• Topological flat bands in a family of multilayer graphene moiré lattices
• Dirac Magic and Lifshitz Transitions in AA-Stacked Twisted Multilayer Graphene
• Flat bands for electrons in rhombohedral graphene multilayers with a twin boundary
• Nearly flat bands in twisted triple bilayer graphene
• Observation of first-order quantum phase transitions and ferromagnetism in twisted double bilayer graphene
• Observation of dichotomic field-tunable electronic structure in twisted monolayer-bilayer graphene
• Doping fingerprints of spin and lattice fluctuations in moiré superlattice systems
• Pressure-Driven Moiré Potential Enhancement and Tertiary Gap Opening in Graphene/h-BN Heterostructure
• Built-in Bernal gap in large-angle-twisted monolayer-bilayer graphene
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• Topological Mixed Valence Model in Magic-Angle Twisted Bilayer Graphene
• Interplay of Landau quantization and interminivalley scatterings in a weakly coupled moiré superlattice
• Inducing topological flat bands in bilayer graphene with electric and magnetic superlattices
• Short vs. long range exchange interactions in twisted bilayer graphene
• Independently Tunable Flat Bands and Correlations in a Graphene Double Moiré System
• Moiré fractals in twisted graphene layers
• Chern-Textured Exciton Insulators with Valley Spiral Order in Moiré Materials
• Kagomé quantum oscillations in graphene superlattices
• Renormalized Magic Angles in Asymmetric Twisted Graphene Multilayers
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• Symmetry-based classification of exact flat bands in single and bilayer moiré systems
• Second-Order Conductivity Probes a Cascade of Singularities in a Moiré Superlattice
• Energy Spectrum Theory of Incommensurate Systems
• Sliding-dependent electronic structures of alternating-twist tetralayer graphene
• Shift current response in twisted double bilayer graphenes
• Hofstadter Butterfly in Graphene
• Strain Engineering of van Hove Singularity and Coupled Itinerant Ferromagnetism in Quasi-2D Oxide Superlattices
• High conductivity from cross-band electron pairing in flat-band systems