Valley-selective Floquet Chern Flat Bands in Twisted Multilayer Graphene
arXiv:2007.15489 · doi:10.1103/PhysRevB.103.195146
Abstract
We show that Floquet engineering with circularly polarized light (CPL) can selectively split the valley degeneracy of a twisted multilayer graphene (TMG), and thus generate a controlled valley-polarized Floquet Chern flat band with tunable large Chern number. It offers a feasible optical way to manipulate the valley degree of freedom in moiré flat bands, and hence opens new opportunities to study the valleytronics of morié flat band systems. We thus expect that many of the valley-related properties of TMG, e.g. orbital ferromagnetism, can be switched by CPL with proper doping. We reveal a Chern number hierarchy rule for the Floquet flat bands in a generic (M+N)-layer TMG. We also illustrate that the CPL effects on TMG strongly rely on the stacking chirality, which is an unique feature of TMG. All these phenomena could be tested in the twisted double bilayer graphene systems, which is the simplest example of TMG and has already been realized in experiment.
References in corpus (71)
- Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
- Moire bands in twisted double-layer graphene
- MoS_2 as an ideal material for valleytronics: valley-selective circular dichroism and valley Hall effect
- Valley contrasting physics in graphene: magnetic moment and topological transport
- Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene
- Valley filter and valley valve in graphene
- Graphene bilayer with a twist: electronic structure
- Intrinsic quantized anomalous Hall effect in a moiré heterostructure
- Photovoltaic Hall effect in graphene
- Observation of Floquet-Bloch states on the surface of a topological insulator
- Transport properties of non-equilibrium systems under the application of light: Photo-induced quantum Hall insulators without Landau levels
- Floquet Engineering of Quantum Materials
- Light-induced anomalous Hall effect in graphene
- Origin of Magic Angles in Twisted Bilayer Graphene
- High-frequency approximation for periodically driven quantum systems from a Floquet-space perspective
- Electric Field Tunable Correlated States and Magnetic Phase Transitions in Twisted Bilayer-Bilayer Graphene
- Signatures of Gate-Tunable Superconductivity in Trilayer Graphene/Boron Nitride Moiré Superlattice
- Continuum Model of the Twisted Bilayer
- Spin-polarized Correlated Insulator and Superconductor in Twisted Double Bilayer Graphene
- Evidence of Gate-Tunable Mott Insulator in Trilayer Graphene-Boron Nitride Moiré Superlattice
- Correlated states in twisted double bilayer graphene
- Exponentially slow heating in periodically driven many-body systems
- Band Structure of ABC-Stacked Graphene Trilayers
- Nearly Flat Chern Bands in Moiré Superlattices
- Floquet Spectrum and Transport Through an Irradiated Graphene Ribbon
- Irradiated graphene as a tunable Floquet topological insulator
- Brillouin-Wigner theory for high-frequency expansion in periodically driven systems: Application to Floquet topological insulators
- Electrical switching of magnetic order in an orbital Chern insulator
- An exact continuum model for low-energy electronic states of twisted bilayer graphene
- Correlated Insulating States in Twisted Double Bilayer Graphene
- Electrically tunable correlated and topological states in twisted monolayer-bilayer graphene
- Chiral Decomposition in the Electronic Structure of Graphene Multilayers
- Quantum valley Hall effect, orbital magnetism, and anomalous Hall effect in twisted multilayer graphene systems
- Theory of correlated insulating behaviour and spin-triplet superconductivity in twisted double bilayer graphene
- Flatbands in twisted double bilayer graphene
- Band structure and topological property of twisted double bilayer graphenes
- Dynamical preparation of Floquet Chern insulators
- Microscopic theory for the light-induced anomalous Hall effect in graphene
- When chiral photons meet chiral fermions - Photoinduced anomalous Hall effects in Weyl semimetals
- Gate-Tunable Topological Flat Bands in Trilayer Graphene-Boron Nitride Moiré Superlattices
- Valley-Hall Kink and Edge States in Multilayer Graphene
- Controlled Population of Floquet-Bloch States via Coupling to Bose and Fermi Baths
- Tunable van Hove Singularities and Correlated States in Twisted Trilayer Graphene
- Moiré Flat Bands in Twisted Double Bilayer Graphene
- Large, valley-exclusive Bloch-Siegert shift in monolayer WS2
- Adiabatic Perturbation Theory and Geometry of Periodically-Driven Systems
- Generation of valley polarized current in bilayer graphene
- Coexistence of ultraheavy and ultrarelativistic Dirac quasiparticles in sandwiched trilayer graphene
- Occupation of topological Floquet bands in open systems
- Observation of the quantum valley Hall state in ballistic graphene superlattices
- Floquet-Engineered Valleytronics in Dirac Systems
- Theory of photoinduced Floquet Weyl semimetal phases
- Topological Floquet Engineering of Twisted Bilayer Graphene
- Electronic Properties of Twisted Trilayer Graphene
- Topological flat bands in twisted trilayer graphene
- Intrinsic Band Gap and Electrically Tunable Flat Bands in Twisted Double Bilayer Graphene
- Interaction Induced Quantum Valley Hall Effect in Graphene
- Optically induced flat bands in twisted bilayer graphene
- Anomalous Hall effect, magneto-optical properties, and nonlinear optical properties of twisted graphene systems
- Gate tunable topological flat bands in twisted monolayer-bilayer graphene
- Ferromagnetism and superconductivity in twisted double bilayer graphene
- Floquet-Engineered Topological Flat Bands in Irradiated Twisted Bilayer Graphene
- Effective Floquet Hamiltonians for periodically-driven twisted bilayer graphene
- Floquet engineering of interlayer couplings: Tuning the magic angle of twisted bilayer graphene at the exit of a waveguide
- Scanning tunneling microscopy and spectroscopy of twisted trilayer graphene
- Irradiated bilayer graphene
- Floquet engineering of twisted double bilayer graphene
- Electronic Structure of Single-Twist Trilayer Graphene
- Floquet High Chern Insulators in Periodically Driven Chirally Stacked Multilayer Graphene
- Many-body dynamics and gap opening in interacting periodically driven systems
- Valley-Selective Topological Ordered States in Irradiated Bilayer Graphene
Cited by in corpus (14)
- Light-induced emergent phenomena in 2D materials and topological materials
- Light-matter coupling and quantum geometry in moiré materials
- Tunable moiré materials for probing Berry physics and topology
- Floquet Engineering of Nonequilibrium Valley-Polarized Quantum Anomalous Hall Effect with Tunable Chern Number
- Multifrequency and multimode topological waveguides in a Stampfli-triangle photonic crystal with large valley Chern numbers
- Chiral limits and effect of light on the Hofstadter butterfly in twisted bilayer graphene
- Moir{é} pattern assisted geometric resonant tunneling in disordered twisted bilayer graphene
- Floquet-driven indirect exchange interaction mediated by topological insulator surface states
- Band structure and band topology in twisted homotrilayer transition metal dichalcogenides
- Light driven magnetic transitions in transition metal dichalcogenide heterobilayers
- Floquet Fractional Chern Insulators and Competing Phases in Twisted Bilayer Graphene
- Topological Floquet Flat Bands in Irradiated Alternating Twist Multilayer Graphene
- Floquet engineering and non-equilibrium topological maps in twisted trilayer graphene
- Intervalley Band Crossing and Transition of Fractional Chern Insulators in Floquet Twisted Bilayer MoTe