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Near-edge x-ray absorption fine structure investigation of graphene

Authors
  • Pacilé, D.
  • Papagno, M.
  • Rodríguez, A. Fraile
  • Grioni, M.
  • Papagno, L.
  • Girit, Ç. Ö.
  • Meyer, J. C.
  • Begtrup, G. E.
  • Zettl, A.
Type
Preprint
Publication Date
May 15, 2008
Submission Date
May 15, 2008
Identifiers
DOI: 10.1103/PhysRevLett.101.066806
Source
arXiv
License
Yellow
External links

Abstract

We report the near-edge x-ray absorption fine structure (NEXAFS) spectrum of a single layer of graphite (graphene) obtained by micromechanical cleavage of Highly Ordered Pyrolytic Graphite (HOPG) on a SiO2 substrate. We utilized a PhotoEmission Electron Microscope (PEEM) to separately study single- double- and few-layers graphene (FLG) samples. In single-layer graphene we observe a splitting of the pi* resonance and a clear signature of the predicted interlayer state. The NEXAFS data illustrate the rapid evolution of the electronic structure with the increased number of layers.

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