Plasmons and the spectral function of graphene

2007/07/28 by Marco Polini, Reza Asgari, Giovanni Borghi +3 · 4 citations
Materials Science · Physics and Astronomy · #Graphene research and applications #Surface and Thin Film Phenomena #Topological Materials and Phenomena #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.77.081411

published as Phys. Rev. B 77, 081411(R) (2008) · 5 Pages, 4 Figures, Submitted

arxiv created 2007/07/28 · openalex publication_date 2008/02/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We report a theoretical study of the influence of electron-electron interactions on the one-particle Green's function of a doped graphene sheet based on the random-phase approximation and on graphene's massless Dirac equation continuum model. We find that states near the Dirac point interact strongly with plasmons with a characteristic frequency \ensuremathω_pl^\ensuremath⋆ that scales with the sheet's Fermi energy and depends on its interaction coupling constant \ensuremathα_gr, partially explaining prominent features of recent angle-resolved photoemission spectroscopy data.

Citations

• Berry's Phase and Absence of Back Scattering in Carbon Nanotubes
• Inelastic carrier lifetime in graphene
• Electric Field Effect in Atomically Thin Carbon Films
• Graphene: new bridge between condensed matter physics and quantum electrodynamics

Cited by

• Engineering artificial graphene in a two-dimensional electron gas
• Quasiparticle properties of graphene in the presence of disorder
• The magnetic field particle–hole excitation spectrum in doped graphene and in a standard two-dimensional electron gas
• Electrical plasmon detection in graphene waveguides