Interface Structure of Graphene on SiC(000-1)

Details Interface Structure of Graphene on SiC(000-1) Interface Structure of Graphene on SiC(000-1)

2011-10-29

arxiv.org/abs/1110.6562v2

Phys. Rev. B 85, 041404(R) (2012)

Physics

Condensed Matter

Materials Science

9 pages, 4 figures; added Refs. 16 and 20, and made minor revisions to text

Scientific paper

Graphene films prepared by heating the SiC(000-1) surface (the C-face of the {0001} surfaces) in vacuum or in a Si-rich environment are compared. It is found that different interface structures occur for the two situations. The former yields a well known 3x3 reconstructed interface, whereas the latter produces an interface with rt(43)xrt(43)-R\pm7.6 degrees symmetry. This structure is shown to contain a graphene-like layer with properties similar to the 6rt(3)x6rt(3)-R30 degrees "buffer layer" that forms on the Si(0001) surface (the Si-face).

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