Magnetoplasmons in magic-angle twisted bilayer graphene
arXiv:2309.02546 · doi:10.1088/1361-648X/acecf1
Abstract
The magic-angle twisted bilayer graphene (MATBLG) has been demonstrated to exhibit exotic physical properties due to the special flat bands. However, exploiting the engineering of such properties by external fields is still in it infancy. Here we show that MATBLG under an external magnetic field presents a distinctive magnetoplasmon dispersion, which can be significantly modified by transferred momentum and charge doping. Along a wide range of transferred momentum, there exist special pronounced single magnetoplasmon and horizontal single-particle excitation modes near charge neutrality. We provide an insightful discussion of such unique features based on the electronic excitation of Landau levels quantized from the flat bands and Landau damping. Additionally, charge doping leads to peculiar multiple strong-weight magnetoplasmons. These characteristics make MATBLG a favorable candidate for plasmonic devices and technology applications.
References in corpus (47)
- Correlated Insulator Behaviour at Half-Filling in Magic Angle Graphene Superlattices
- Moire bands in twisted double-layer graphene
- Tuning superconductivity in twisted bilayer graphene
- Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene
- Superconductors, Orbital Magnets, and Correlated States in Magic Angle Bilayer Graphene
- Intrinsic quantized anomalous Hall effect in a moiré heterostructure
- Dynamical polarization of graphene at finite doping
- Spectroscopic signatures of many-body correlations in magic angle twisted bilayer graphene
- Lattice relaxation and energy band modulation in twisted bilayer graphenes
- Maximally-localized Wannier orbitals and the extended Hubbard model for the twisted bilayer graphene
- All "Magic Angles" Are "Stable" Topological
- Mapping the twist angle and unconventional Landau levels in magic angle graphene
- Faithful Tight-binding Models and Fragile Topology of Magic-angle Bilayer Graphene
- Energy Spectrum and Quantum Hall Effect in Twisted Bilayer Graphene
- Chern Insulators and Topological Flat-bands in Magic-angle Twisted Bilayer Graphene
- Electrostatic effects, band distortions and superconductivity in twisted graphene bilayers
- Model for Metal-Insulator Transition in Graphene Superlattices and Beyond
- An exact continuum model for low-energy electronic states of twisted bilayer graphene
- Intrinsic Terahertz Plasmons and Magnetoplasmons in Large Scale Monolayer Graphene
- Linear plasmon dispersion in single-wall carbon nanotubes and the collective excitation spectrum of graphene
- Visualization of the flat electronic band in twisted bilayer graphene near the magic angle twist
- Quantum Hall Effect, Screening and Layer-Polarized Insulating States in Twisted Bilayer Graphene
- Excitation spectrum and high energy plasmons in single- and multi-layer graphene
- Continuum model for relaxed twisted bilayer graphenes and moiré electron-phonon interaction
- Collective modes of doped graphene and a standard 2DEG in a strong magnetic field: linear magneto-plasmons versus magneto-excitons
- Collective excitations in twisted bilayer graphene close to the magic angle
- The Landau Level of Fragile Topology
- Internal screening and dielectric engineering in magic-angle twisted bilayer graphene
- Quasi-flat plasmonic bands in twisted bilayer graphene
- Magnetoplasmons in layered graphene structures
- Structural relaxation and low energy properties of Twisted Bilayer Graphene
- Intrinsically Undamped Plasmon Modes in Narrow Electron Bands
- Derivation of Wannier orbitals and minimal-basis tight-binding hamiltonians for twisted bilayer graphene: a first-principles approach
- Confined magneto-optical waves in graphene
- The magnetic field particle-hole excitation spectrum in doped graphene and in a standard two-dimensional electron gas
- Optical and plasmonic properties of twisted bilayer graphene: Impact of interlayer tunneling asymmetry and ground-state charge inhomogeneity
- Attractive electron-electron interactions from internal screening in magic angle twisted bilayer graphene
- Interactions in the 8-orbital model for twisted bilayer graphene
- Twist-angle dependence of electron correlations in moiré graphene bilayers
- Local and Global Screening Properties of Graphene Revealed through Landau Level Spectroscopy
- Collective excitations and plasmon spectrum in twisted bilayer graphene near the magic angle
- Importance of long-ranged electron-electron interactions for the magnetic phase diagram of twisted bilayer graphene
- Does filling-dependent band renormalization aid pairing in twisted bilayer graphene?
- Moiré disorder effect in twisted bilayer graphene
- four-band Wannier tight-binding model for generic twisted graphene systems
- Generalized Peierls substitution for the tight-binding model of twisted multilayer graphene in a magnetic field
- Influence of electric and magnetic fields and -edge bands on the electronic and optical spectra of graphene nanoribbons