Atomic structure of monolayer graphite formed on Ni(111)

Y. Gamo, A. Nagashima, M. Wakabayashi, M. Terai, C. Oshima

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334 Citations (Scopus)

Abstract

The atomic structure of monolayer graphite formed on a Ni(111) surface was investigated by means of LEED intensity analysis. We measured the I-V curves of the (1,0), (0,1) and (1,1) diffraction spots from a (1 × 1) atomic structure, and analyzed them using Van Hove's analytical program based on dynamical theory. Three different atomic structures meeting the experimental requirement of the 3m symmetry were evaluated with Pendry's reliability factor. The final best-fit structure characterized by the minimum Pendry's reliability factor of 0.22 is as follows: one carbon atom in a unit cell of the graphite overlayer is located at the on-top site of the topmost Ni atoms, while another carbon atom exists at the fee hollow site. The spacing between the flat overlayer and the topmost Ni layer is 2.11±0.07 Å, which is much narrower than the interlayer spacing in bulk graphite (3.35 Å).

Original languageEnglish
Pages (from-to)61-64
Number of pages4
JournalSurface Science
Volume374
Issue number1-3
Publication statusPublished - 1997 Mar 10

Keywords

  • Graphite
  • Low energy electron diffraction
  • Morphology
  • Nickel
  • Roughness and topography
  • Single crystal epitaxy
  • Surface structure

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

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  • Cite this

    Gamo, Y., Nagashima, A., Wakabayashi, M., Terai, M., & Oshima, C. (1997). Atomic structure of monolayer graphite formed on Ni(111). Surface Science, 374(1-3), 61-64.