Essays about: "Dirac cone"
Found 2 essays containing the words Dirac cone.
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1. Pair Production and the Light-Front Vacuum
University essay from Institutionen för fysikAbstract : Dominated by Heisenberg's uncertainty principle, vacuum is not quantum mechanically an empty void, i.e. virtual pairs of particles appear and disappear persistently. This nonlinearity subsequently provokes a number of phenomena which can only be practically observed by going to a high-intensity regime. READ MORE
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2. Curvature-Induced Energy Band Tilting in Finite-Length Carbon Nanotubes
University essay from Institutionen för fysikAbstract : 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. READ MORE