Collective modes of doped graphene and a standard 2DEG in a strong magnetic field: linear magneto-plasmons versus magneto-excitons

Abstract

A doped graphene layer in the integer quantum Hall regime reveals a highly unusual particle-hole excitation spectrum, which is calculated from the dynamical polarizability in the random phase approximation. We find that the elementary neutral excitations in graphene in a magnetic field are unlike those of a standard two-dimensional electron gas (2DEG): in addition to the upper-hybrid mode, the particle-hole spectrum is reorganized in linear magneto-plasmons that disperse roughly parallel to $\omega =v_{F}q$, instead of the usual horizontal (almost dispersionless) magneto-excitons. These modes could be detected in an inelastic light scattering experiment.

arXiv comment8 pages, 3 figures. Version accepted for publication in Phys. Rev. B

References in corpus (16)

• The electronic properties of graphene
• Two-Dimensional Gas of Massless Dirac Fermions in Graphene
• Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
• Dielectric function, screening, and plasmons in 2D graphene
• Dynamical polarization of graphene at finite doping
• Non-Fermi liquid behaviour of electrons in the half-filled honeycomb lattice (A renormalization group approach)
• The Role of Electron-electron Interactions in Graphene ARPES Spectra
• Electron interactions in graphene in a strong magnetic field
• Excitations from Filled Landau Levels in Graphene
• The quasiparticle spectral function in doped graphene
• Magnetoplasmons in layered graphene structures
• f-Sum Rule and Unconventional Spectral Weight Transfer in Graphene
• Magnetoplasmons excitations in graphene for filling factors $\nu \le 6$
• Observation of Collective Excitations of the Dilute 2D Electron System
• Electromagnetic response and effective gauge theory of graphene in a magnetic field
• Inter-band magnetoplasmons in mono- and bi-layer graphene

Cited by in corpus (65)

• Electronic Properties of Graphene in a Strong Magnetic Field
• Quantum field theory in a magnetic field: From quantum chromodynamics to graphene and Dirac semimetals
• A Primer on Surface Plasmon-Polaritons in Graphene
• Plasmonics in Dirac systems: from graphene to topological insulators
• Colloquium: Graphene spectroscopy
• Phase diagram for the $\nu =0$ quantum Hall state in monolayer graphene
• Infrared Topological Plasmons in Graphene
• Drude weight, plasmon dispersion, and a.c. conductivity in doped graphene sheets
• Dirac electronic states in graphene systems: Optical spectroscopy studies
• Plasmons and near-field amplification in double-layer graphene
• Excitation spectrum and high energy plasmons in single- and multi-layer graphene
• Dynamical polarizability of graphene beyond the Dirac cone approximation
• Dynamical polarizability of graphene irradiated by circularly polarized ac electric fields
• Confined magneto-optical waves in graphene
• The magnetic field particle-hole excitation spectrum in doped graphene and in a standard two-dimensional electron gas
• Carrier drift velocity and edge magnetoplasmons in graphene
• Dynamical polarization of monolayer graphene in a magnetic field
• Dynamical screening in bilayer graphene
• Magneto-electronic properties of multilayer black phosphorus
• Spin-flip excitations, spin waves, and magneto-excitons in graphene Landau levels at integer filling factors
• Directional excitation of graphene surface plasmons
• Magnetoplasmons in quasi-neutral epitaxial graphene nanoribbons
• Broken-symmetry $\nu =0$ quantum Hall states in bilayer graphene: Landau level mixing and dynamical screening
• Atypical Fractional Quantum Hall Effect in Graphene at Filling Factor 1/3
• Tilted-Cone Induced Cusps and Nonmonotonic Structures in Dynamical Polarization Function of Massless Dirac Fermions
• Drift-induced modifications to the dynamical polarization of graphene
• Dynamical current-current correlation of the hexagonal lattice and graphene
• Magnetoplasmons of the tilted-anisotropic Dirac cone material $\alpha -$(BEDT-TTF)${}_2$I${}_3$
• Theory of Bernstein Modes in Graphene
• Influence of Landau level mixing on the properties of elementary excitations in graphene in strong magnetic field
• Skyrmion zoo in graphene at charge neutrality in a strong magnetic field
• Coulomb interaction and magnetic catalysis in the quantum Hall effect in graphene
• Plasmon dissipation in gapped-graphene open systems at finite temperature
• Collisionless Hydrodynamics of Doped Graphene in a Magnetic Field
• Finite temperature dynamical polarization and plasmons in gapped graphene
• Effect of magnetic field and chemical potential on the RKKY interaction in the $\alpha$-${\mathcal{T}}_3$ lattice
• Magnetoplasmons for the $\alpha$-T${}_3$ model with filled Landau levels
• Electron states in the field of charged impurities in two-dimensional Dirac systems
• Transverse current current response of graphene at finite temperature, plasmons and absorption
• Soft-boundary graphene nanoribbon formed by a graphene sheet above a perturbed ground plane: conductivity profile and SPP modal current distribution
• Many-body effects of Coulomb interaction on Landau levels in graphene
• Nonlinear magnetotransport in a dc-current-biased graphene
• Combined Effect of Stacking and Magnetic Field on Plasmon Excitations in Bilayer Graphene
• Theory of inplane magnetoresistance in two-dimensional massless Dirac fermion system
• Coulomb interaction and electron-hole asymmetry in cyclotron resonance of bilayer graphene in high magnetic field
• Terahertz magneto-optical properties of graphene hydrodynamic electron liquid
• Experimental evidence for direct insulator-quantum Hall transition in multi-layer graphene
• Thermal smearing of the magneto-Kohn anomaly for Dirac materials and comparison with the two-dimensional electron liquid
• Undamped relativistic magnetoplasmons in lossy two-dimensional electron systems
• Polarization of graphene in a strong magnetic field beyond the Dirac cone approximation
• Polarizability, plasmons, and screening in 1T${}^{\prime }$-MoS${}_2$ with tilted Dirac bands
• Magnetic-field-assisted transmission of THz waves through a graphene layer combined with a periodically perforated metallic film
• Quantum oscillations in Dirac magnetoplasmons
• The local density of states in the presence of impurity scattering in graphene at high magnetic field
• Many-body filling-factor dependent renormalization of Fermi velocity in graphene in strong magnetic field
• Quantum Electrodynamics of graphene Landau levels in a deep-subwavelength hyperbolic phonon polariton cavity
• Magnetoplasmons in magic-angle twisted bilayer graphene
• Tunable plasmon modes in doped AA-stacked bilayer graphene
• Many-Body Quantum Geometric Dipole
• Magneto-Coulomb Drag and Hall Drag in Double-Layer Dirac Systems
• Optical Properties of Graphene in Magnetic and Electric fields
• Many-body renormalization of Landau levels in graphene due to screened Coulomb interaction
• Influence of Dynamical Floquet Spectrum on the Plasmon Excitations and Exchange Energy of tilted monolayer 1T${}^{\prime }$MoS${}_2$
• Magneto-exciton limit of quantum Hall breakdown in graphene
• Magnetic quantization in multilayer graphenes