Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1413173 | Carbon | 2016 | 4 Pages |
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.
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Authors
Yuki Fukaya, Shiro Entani, Seiji Sakai, Izumi Mochizuki, Ken Wada, Toshio Hyodo, Shin-ichi Shamoto,