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Electron scattering on microscopic corrugations in graphene

2007/06/30 by M. I. Katsnelson, A. K. Geim, A. K. Geǐm · 12 citations
Materials Science · Physics and Astronomy · #Bilayer graphene #Carrier scattering #Charge carrier #Condensed matter physics #Coulomb #Dirac fermion #Electron #Electron mobility #Electron scattering #Graphene #Graphene research and applications #Impurity #Materials science #Mean free path #Nanotechnology #Optics #Physics #Quantum and electron transport phenomena #Quantum mechanics #Range (aeronautics) #Scattering #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci

paper · pdf · doi:10.1098/rsta.2007.2157

published as Phil. Trans. R. Soc. A 366, 195-204 (2008) · Final version, to be published in Philos. Trans. Royal Soc. A

arxiv created 2007/09/11 · openalex publication_date 2007/11/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We discuss various scattering mechanisms for Dirac fermions in single-layer graphene. It is shown that scattering on a short-range potential (e.g. due to neutral impurities) is mostly irrelevant for electronic quality of graphene, which is likely to be controlled by charged impurities and ripples (microscopic corrugations of a graphene sheet). The latter are an inherent feature of graphene due to its two-dimensional nature and can also be an important factor in defining the electron mean-free path. We show that certain types of ripples create a long-range scattering potential, similar to Coulomb scatterers, and result in charge-carrier mobility practically independent of carrier concentration, in agreement with experimental observations.

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