Emergence of Plasmaronic Structure in the Near Field Optical Response of Graphene

Abstract

The finite momentum optical response $\sigma (\mathbf{q},\omega )$ of graphene can be probed with the innovative technique of infrared nanoscopy where mid-infrared radiation is confined by an atomic force microscope cantilever tip. In contrast to conventional $q\sim 0$ optical absorption which primarily involves Dirac fermions with momentum near the Fermi momentum, $k\sim k_F$, for finite $q$, $\sigma (\mathbf{q},\omega )$ has the potential to provide information on many body renormalizations and collective phenomena which have been found at small $k<k_F$ near the Dirac point in electron-doped graphene. For electron-electron interactions, the low energy excitation spectrum characterizing the incoherent part of the quasiparticle spectral function of Dirac electrons with $k\sim k_F$ consists of a flat, small amplitude background which scales with chemical potential and Fermi momentum. However, probing of the states with $k$ near $k=0$ will reveal plasmarons, a collective state of a charge carrier and a plasmon. These collective modes in graphene have recently been seen in angle-resolved photoemission spectroscopy and here we describe how they manifest in near field optics.

arXiv comment5 pages, 4 figures

References in corpus (18)

• Dielectric function, screening, and plasmons in 2D graphene
• Dynamical polarization of graphene at finite doping
• Infrared nanoscopy of Dirac plasmons at the graphene-SiO2 interface
• Giant Phonon-induced Conductance in Scanning Tunneling Spectroscopy of Gate-tunable Graphene
• The Role of Electron-electron Interactions in Graphene ARPES Spectra
• On the universal AC optical background in graphene
• Anomalous Absorption Line in the Magneto-Optical Response of Graphene
• Dirac electronic states in graphene systems: Optical spectroscopy studies
• Dynamic Screening and Low Energy Collective Modes in Bilayer Graphene
• The quasiparticle spectral function in doped graphene
• Effect of Holstein phonons on the electronic properties of graphene
• Charge carrier interaction with a purely electronic collective mode: Plasmarons and the infrared response of elemental bismuth
• Effect of electron-phonon interaction on spectroscopies in graphene
• The infrared conductivity of graphene
• Infrared Conductivity of Elemental Bismuth under Pressure: Evidence for an Avoided Lifshitz-Type Semimetal-Semiconductor Transition
• Effect of electron-phonon coupling on energy and density of states renormalizations of dynamically screened graphene
• Correlations, Plasmarons, and Quantum Spectral Function in Bilayer Graphene
• Phonon spectroscopy through the electronic density of states in graphene

Cited by in corpus (19)

• van der Waals forces in density functional theory: The vdW-DF method
• Colloquium: Graphene spectroscopy
• Dynamical conductivity of AA-stacked bilayer graphene
• Dynamical Polarization Function, Plasmons and Screening in Silicene and Other Buckled Honeycomb Lattices
• Intrinsic plasmons in 2D Dirac materials
• AC/DC Spin and Valley Hall Effects in Silicene and Germanene
• Hexagonal warping on optical conductivity of surface states in Topological Insulator Bi_{2}Te_{3}
• Magneto-optics of general pseudospin-s two-dimensional Dirac-Weyl fermions
• Dynamically screened vertex correction to $GW$
• Plasmon anomaly in the dynamical optical conductivity of graphene
• Note on Hawking-Unruh effects in graphene
• Theoretical study of optical conductivity of graphene with magnetic and nonmagnetic adatoms
• Effect of Dynamical Screening on Single Particle Spectral Features of Uniaxially Strained Graphene: Tuning the Plasmaron Ring
• Bolometric arrays and infrared sensitivity of VO2 films with varying stoichiometry
• Dielectric screening of surface states in a topological insulator
• Impact of Electron-Phonon Coupling on Near-Field Optical Spectra
• Tracking Quasiparticle Energies in Graphene with Near Field Optics
• Pressure sensing using vertically aligned carbon nanotubes on a flexible substrate
• Growth of Tall Vertical Carbon Nanotube Forests using Al-Fe Catalysts and Transfer to Flexible Substrates