Tunable interband and intraband plasmons in twisted double bilayer graphene
arXiv:2205.06239 · doi:10.1103/PhysRevB.106.155422
Abstract
Flat bands in twisted moire superlattices support a variety of topological and strongly correlated phenomena along with easily tunable electrical and optical properties. Here, we demonstrate the existence of tunable, long-lived, and flat intraband and interband terahertz plasmons in twisted double bilayer graphene. We show that the interband plasmons originate from the presence of a Van Hove singularity in the joint density of states and a finite Berry connection between the pair of bands involved. We find that the gapped interband plasmon mode has a universal dispersion, and the plasmon gap is specified by the location of the Van Hove singularity in the joint density of states. Metallic moire systems support an additional intraband plasmon mode which becomes flat in the large momentum limit because of the influence of the interband correlations. We demonstrate that the undamped and flat plasmon modes in moire systems are highly tunable and can be controlled by varying the vertical electric field and electron doping, and they persist over a wide range of twist angles.
arXiv comment4 figures, 9 pages
References in corpus (50)
- Maximally localized Wannier functions: Theory and applications
- Moire bands in twisted double-layer graphene
- Plasmonics in graphene at infra-red frequencies
- Gate-tuning of graphene plasmons revealed by infrared nano-imaging
- Optical nano-imaging of gate-tuneable graphene plasmons
- Dielectric function, screening, and plasmons in 2D graphene
- Quantum Plasmonics
- Highly confined low-loss plasmons in graphene-boron nitride heterostructures
- Mid-infrared plasmons in scaled graphene nanostructures
- Graphene Bilayers with a Twist
- Electric Field Tunable Correlated States and Magnetic Phase Transitions in Twisted Bilayer-Bilayer Graphene
- Spin-polarized Correlated Insulator and Superconductor in Twisted Double Bilayer Graphene
- Correlated states in twisted double bilayer graphene
- Maximally-localized Wannier orbitals and the extended Hubbard model for the twisted bilayer graphene
- Valley Chern Numbers and Boundary Modes in Gapped Bilayer Graphene
- Light-matter interactions with photonic quasiparticles
- Correlated Insulating States in Twisted Double Bilayer Graphene
- Flatbands in twisted double bilayer graphene
- Single-photon nonlinear optics with graphene plasmons
- Band structure and topological property of twisted double bilayer graphenes
- Linear density response function in the projector-augmented wave method: Applications to solids, surfaces, and interfaces
- Berry curvature dipole senses topological transition in a moiré superlattice
- Moiré Flat Bands in Twisted Double Bilayer Graphene
- Dynamic Screening and Low Energy Collective Modes in Bilayer Graphene
- Chiral plasmons without magnetic field
- Fizeau Drag in Graphene Plasmonics
- Collective excitations in twisted bilayer graphene close to the magic angle
- Coulomb interaction, phonons, and superconductivity in twisted bilayer graphene
- Plasmonics with two-dimensional semiconductors "beyond graphene": from basic research to technological applications
- Quasi-flat plasmonic bands in twisted bilayer graphene
- Electron Energy-Loss Spectroscopy: A versatile tool for the investigations of plasmonic excitations
- Intrinsically Undamped Plasmon Modes in Narrow Electron Bands
- Intrinsic Band Gap and Electrically Tunable Flat Bands in Twisted Double Bilayer Graphene
- Pairing in magic-angle twisted bilayer graphene: role of phonon and plasmon umklapp
- Long-lived spin plasmons in a spin-polarized two-dimensional electron gas
- Magic-angle semimetals
- Optical and plasmonic properties of twisted bilayer graphene: Impact of interlayer tunneling asymmetry and ground-state charge inhomogeneity
- A novel undamped gapless plasmon mode in tilted type-II Dirac semimetal
- Nonlinear anomalous Hall effects probe topological phase-transitions in twisted double bilayer graphene
- Magnus Nernst and thermal Hall effect
- Plasmon mass and Drude weight in strongly spin-orbit-coupled 2D electron gases
- Superconductivity from collective excitations in magic angle twisted bilayer graphene
- Tunable bandwidths and gaps in twisted double bilayer graphene system on the verge of correlations
- Collective excitations and plasmon spectrum in twisted bilayer graphene near the magic angle
- Plasmon modes of a massive Dirac plasma, and their superlattices
- Bulk valley transport and Berry curvature spreading at the edge of flat bands
- Density-independent plasmons for terahertz-stable topological metamaterials
- Plasmons in spin polarized graphene: a new way to measure spin polarization
- Flat-band plasmons in twisted bilayer transition metal dichalcogenides
- Trigonal Warping, Satellite Dirac Points and Multiple Field Tuned Topological Transitions in Twisted Double Bilayer Graphene
Cited by in corpus (10)
- Roadmap for Photonics with 2D Materials
- Tunable moiré materials for probing Berry physics and topology
- Nonlinear anomalous Hall effects probe topological phase-transitions in twisted double bilayer graphene
- Plasmons in a two-dimensional nonsymmorphic nodal-line semimetal
- Intrinsic nonreciprocal bulk plasmons in noncentrosymmetric magnetic systems
- Friedel oscillations in two-dimensional materials with inverted bands and Mexican-hat dispersion
- Optical properties, plasmons, and orbital Skyrme textures in twisted TMDs
- Large quantum nonreciprocity in plasmons dragged by drifting electrons
- Plasmons in N-layer systems
- Interband plasmons due to Mexican hat dispersion in two-dimensional materials with inverted bands