Sökning: "Dirac-kon"

Hittade 1 uppsats innehållade ordet Dirac-kon.

  1. 1. Curvature-Induced Energy Band Tilting in Finite-Length Carbon Nanotubes

    Master-uppsats, Institutionen för fysik

    Författare :Anton Vikström; [2011]
    Nyckelord :carbon nanotubes; graphene; Dirac cone; condensed matter; velocity asymmetry; tilting; kolnanorör; grafen; Dirac-kon; kondenserade materien; hastighetsasymmetri; lutning;

    Sammanfattning : The near-Fermi-energy energy band structure of carbon nanotubes is given by cross-sections of the graphene Dirac cones near the K and K' points. Using second-order perturbation theory and a nearest-neighbor approximated tight-binding model, curvature-induced corrections to the graphene-based effective model are derived. LÄS MER