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O: Fachverband Oberflächenphysik

O 34: Poster Session I (Graphene; Plasmonics and nanooptics; Coherence and coherent control in nanophotonics and plasmonics)

O 34.20: Poster

Tuesday, March 27, 2012, 18:15–21:45, Poster E

Interaction of manganese and nickel with epitaxial graphene on Ir(111) — •Hendrik Vita, Stefan Böttcher, Martin Weser, Yuriy Dedkov, and Karsten Horn — Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany

In view of an application as spin filter, the interaction of graphene with magnetic materials is interesting. Here we report on a LEED as well as core and valence level photoemission study of the interaction of manganese and nickel adlayers and intercalated layers with graphene grown epitaxially on Ir(111). We examine the doping effect of the adlayers and intercalates through a shift of the Dirac cone to higher binding energies. In a second step, the growth of alloys films of Mn and Ni by stepwise deposition and annealing is examined. We compare our data to Al and Fe intercalated layers in graphene grown on Ni(111).