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Berlin 2015 – scientific programme

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O: Fachverband Oberflächenphysik

O 98: Graphene: Intercalation

O 98.8: Talk

Friday, March 20, 2015, 12:15–12:30, MA 041

Bismuth Intercalated Graphene on Iridium Probed by STM and ARPES — •Jonas Warmuth1, Matteo Michardi2, Torben Hänke1, Marco Bianchi2, Jens Wiebe1, Roland Wiesendanger1, Philip Hofmann2, and Alexander Khajetoorians31Department of Applied Physics, University of Hamburg, Germany — 2Department of Physics and Astronomy, University of Aarhus, Denmark — 3Institute for Materials and Molecules, Radboud University, Nijmegen, Netherlands

We report on the investigation of bismuth intercalated graphene grown on Ir(111) by means of STM and ARPES. The STM measurements reveal a complex periodic structure upon Bi intercalation which we attribute to the formation of a √3 Bi surface alloy. We characterize the changes to the band structure using ARPES, including the doping effects and the modification to the Dirac dispersion.

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