Zitterbewegung, chirality, and minimal conductivity in graphene

M. I. Katsnelson ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 51, issue 2, 157-160

Abstract: It has been recently demonstrated experimentally that graphene, or single-layer carbon, is a gapless semiconductor with massless Dirac energy spectrum. A finite conductivity per channel of order of e 2 /h in the limit of zero temperature and zero charge carrier density is one of the striking features of this system. Here we analyze this peculiarity based on the Kubo and Landauer formulas. The appearance of a finite conductivity without scattering is shown to be a characteristic property of Dirac chiral fermions in two dimensions. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 73.43.Cd Theory and modeling; 81.05.Uw Carbon; diamond; graphite; 03.65.Pm Relativistic wave equations (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00203-1

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