Spacing between graphene and metal substrates studied with total-reflection high-energy positron diffraction

Yuki Fukaya, Shiro Entani, Seiji Sakai, Izumi Mochizuki, Ken Wada, Toshio Hyodo, Shin Ichi Shamoto

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The spacing between graphene and metal substrates has been investigated using total-reflection high-energy positron diffraction (TRHEPD). The rocking curve analysis performed, based on the dynamical diffraction theory, shows that the spacing between the graphene layer and a substrate of Cu(111) and that between graphene and a Co(0001) substrate are 3.34 Å and 2.06 Å, respectively. The former is close to the interlayer spacing in graphite, suggesting a weak interaction with the substrate material, whereas the latter value experimentally verifies that, in the case of graphene on Co(0001), there is a strong interaction with the substrate.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalCarbon
Volume103
DOIs
Publication statusPublished - 2016 Jul 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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