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arxiv: 0807.4286 · v1 · submitted 2008-07-27 · ❄️ cond-mat.mtrl-sci

Is graphene on Ru(0001) a nanomesh?

Thomas Brugger (1) , Sebastian G\"unther (2) , Bin Wang (3) , Hugo Dil (1 , 4) , Marie-Laure Bocquet (3 , 2) , J\"urg Osterwalder (1)
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Joost Wintterlin (2) Thomas Greber (1) ((1) Physik-Institut Universit\"at Z\"urich Z\"urich Switzerland (2) Department Chemie Ludwig-Maximilian Universit\"at M\"unchen Germany (3) Universit\'e de Lyon Laboratoire de Chimie \'Ecole Normale Sup\'erieure de Lyon CNRS France (4) Swiss Light Source Paul Scherrer Institute Villigen Switzerland)
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classification ❄️ cond-mat.mtrl-sci
keywords graphenecorrugateddistinctlayernanomeshsinglesurfaceadsorbed
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The electronic structure of a single layer graphene on Ru(0001) is compared with that of a single layer hexagonal boron nitride nanomesh on Ru(0001). Both are corrugated sp2 networks and display a pi-band gap at the K point of their 1 x 1 Brillouin zone. Graphene has a distinct Fermi surface which indicates that 0.1 electrons are transferred per 1 x 1 unit cell. Photoemission from adsorbed xenon identifies two distinct Xe 5p1/2 lines, separated by 240 meV, which reveals a corrugated electrostatic potential energy surface. These two Xe species are related to the topography of the system and have different desorption energies.

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