2008/07/27 by Thomas Brugger, Sebastian Günther, Bin Wang +8 · 2 citations
Materials Science · Physics and Astronomy · #2D Materials and Applications #Graphene research and applications #Topological Materials and Phenomena #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.79.045407
published as Phys. Rev. B 79, 045407 (2009) · 5 pages, 4 figures, 1 table
arxiv created 2008/07/27 · openalex publication_date 2009/01/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The 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 hybridized networks and display a \ensuremathπ band gap at the K point of their 1\ifmmode×\else\texttimes\fi1 Brillouin zone. In contrast to h-BN/Ru(0001), g/Ru(0001) has a distinct Fermi surface. Together with the band structure measurements this indicates that 0.1e per 1\ifmmode×\else\texttimes\fi1 unit cell are transferred from the Ru substrate to the graphene. Photoemission from adsorbed xenon on g/Ru(0001) identifies two Xe 5p1/2 lines, separated by 240 meV, which reveals a corrugated electrostatic potential energy surface like on h-BN/Rh(111). These two Xe species are related to the topography of the template and have different desorption energies.