2013/04/02 by David A. Siegel, William Regan, А. В. Федоров +4 · 67 citations
Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Charge (physics) #Charge carrier #Condensed matter physics #Electron #Electron mobility #Fermi level #Graphene #Graphene research and applications #Mean free path #Physics #Quantum and electron transport phenomena #Quantum mechanics #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.110.146802
published in Physical Review Letters 110(14), 146802 (American Physical Society) · Please see the published PRL at http://link.aps.org/doi/10.1103/PhysRevLett.110.146802
openalex publication_date 2013/04/02 · arxiv created 2013/04/22 · arxiv updated 2013/04/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The effect of charge-carrier screening on the transport properties of a neutral graphene sheet is studied by directly probing its electronic structure. We find that the Fermi velocity, Dirac point velocity, and overall distortion of the Dirac cone are renormalized due to the screening of the electron-electron interaction in an unusual way. We also observe an increase of the electron mean free path due to the screening of charged impurities. These observations help us to understand the basis for the transport properties of graphene, as well as the fundamental physics of these interesting electron-electron interactions at the Dirac point crossing.