Dresden 2014 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 36: Posters: Bio/organic Molecules on Surfaces, Graphene, Solid/liquid interfaces, Metal Substrates, Electronic Structure Theory
O 36.54: Poster
Dienstag, 1. April 2014, 18:30–22:00, P1
The Effects of Disorder and Defects on the Electronic Structure of Graphene — •Jonathan Parnell1, Sina Habibian1, Klaus Kern1,2, and Christian Ast1 — 1Max Planck Institute for Solid State Research, D-70569 Stuttgart — 2Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne
A high electron mobility is one of the hallmarks of the two-dimensional graphene system. However, disorder and defects reduce the electron mobility, which places constraints on the different ways graphene can be modified. We simulate the effects of disorder and defects within graphene lattices on the electronic structure. For this we employ a simple real space tight-binding model. These simulations allow us to directly correlate theory and experiment by comparing the calculated results with angular resolved photo-emission data. In this way we can make a quantitative assessment of the density of the different types of defects with their signatures in the electronic structure.