Effect of Dynamical Screening on Single Particle Spectral Features of Uniaxially Strained Graphene: Tuning the Plasmaron Ring

Abstract

Electronic screening renormalizes the linear bands of graphene and in the vicinity of the Dirac point, creates a diamond shaped structure in the quasiparticle spectral density. This is a result of electron-plasmon scattering processes which produce a finite momentum feature referred to as the `plasmaron ring'. In this work we explore the effects of uniaxial strain on these spectral features with the aim of understanding how strain modifies correlations. We derive and calculate the spectral density to the G${}_0$W-RPA level which allows us to identify the dispersive behaviour of the diamond geometry, and thus electron-plasmon scattering, for variation in electron-electron coupling strength and magnitude of applied strain. We find that the application of strain changes the geometry (in momentum) of the electron-plasmon scattering and that renormalizations beyond simple geometrical scalings further enhance this effect. These results suggest that the properties of the plasmaron ring can be tuned through the application of uniaxial strain, effectively producing a larger fine structure constant without the need to change the sample substrate.

7 pages, 4 figures

References in corpus (20)

• The electronic properties of graphene
• Graphene plasmonics
• 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
• Dynamical polarization of graphene at finite doping
• Nonlinear elasticity of monolayer graphene
• The Role of Electron-electron Interactions in Graphene ARPES Spectra
• Chirality and Correlations in Graphene
• Comment on "Band structure engineering of graphene by strain: First-principles calculations"
• Optical Properties of Strained Graphene
• The quasiparticle spectral function in doped graphene
• Graphene: A Pseudochiral Fermi Liquid
• Double transfer through Dirac points in a tunable honeycomb optical lattice
• Velocity renormalization and anomalous quasiparticle dispersion in extrinsic graphene
• Emergence of Plasmaronic Structure in the Near Field Optical Response of Graphene
• Optical Self Energy in Graphene due to Correlations
• Effect of uniaxial strain on plasmon excitations in graphene
• Distinguishing Coulomb and electron-phonon interactions for massless Dirac fermions
• Band structure asymmetry of bilayer graphene revealed by infrared spectroscopy

Cited by in corpus (4)

• Novel effects of strains in graphene and other two dimensional materials
• Influence of Coulomb interaction on the anisotropic Dirac cone in graphene
• Van der Waals forces and electron-electron interactions in two strained graphene layers
• Kohn anomaly of optical zone boundary phonons in uniaxial strained graphene: role of the electronic band structure