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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Thursday, 08 November 2007
(at 14:00 in room 1D1, MPIPKS)
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Diffusive transport in graphene

Klaus Ziegler

Physics
University of Augsburg
  Germany  






Motivated by recent experiments, which found substantial disorder in graphene, we discuss the transport of quasiparticles on a honeycomb lattice in the presence of disorder and a weak magnetic field. Assuming that disorder is mostly due to ripples in the graphene sheet, a model with random bonds is studied. Several approaches are considered and their results in terms of the conductivity are compared. This includes a general discussion of the frequency-dependent conductivity. We find a substantial suppression of magnetotransport effects for sufficiently strong disorder, consistent with recent experimental observations by Morozov et al.

last modified: 2019.01.08 Di
author: webadmin

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