Photoemission investigation of oxygen intercalated epitaxial graphene on Ru(0001)

  title={Photoemission investigation of oxygen intercalated epitaxial graphene on Ru(0001)},
  author={S{\o}ren Ulstrup and Paolo Lacovig and Fabrizio Orlando and Daniel Lizzit and Luca Bignardi and Matteo Dalmiglio and Marco Bianchi and Federico Mazzola and Alessandro Baraldi and Rosanna Larciprete and Philip Hofmann and Silvano Lizzit},
  journal={Surface Science},
Abstract We study the formation of epitaxial graphene on Ru(0001) using fast x-ray photoelectron spectroscopy during the growth process. The assignment of different C 1 s and Ru 3 d core level components and their evolution during the growth process gives a detailed insight into the graphene formation and the strongly varying graphene-Ru interaction strength within the large moire unit cell. Subsequent intercalation of oxygen can be achieved at elevated temperature and the core level spectra… Expand
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