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Issue 24, 2008
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Chemical origin of a graphene moiré overlayer on Ru(0001)

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Abstract

Epitaxial graphene on Ru(0001) was studied by means of large-scale density functional theory (DFT) calculations. The results agree well with scanning tunneling microscopy experiments. In contrast to the current understanding, we show that the measured corrugation originates mainly from a geometric buckling of the graphene sheet, induced by alternating weak and strong chemical interactions with the Ru support. In the strong contact regions, charge transfer is evidenced and the opening of a considerable band gap in the graphene is found.

Graphical abstract: Chemical origin of a graphene moiré overlayer on Ru(0001)

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Publication details

The article was received on 31 Jan 2008, accepted on 19 Mar 2008 and first published on 16 Apr 2008


Article type: Paper
DOI: 10.1039/B801785A
Citation: Phys. Chem. Chem. Phys., 2008,10, 3530-3534
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    Chemical origin of a graphene moiré overlayer on Ru(0001)

    B. Wang, M.-L. Bocquet, S. Marchini, S. Günther and J. Wintterlin, Phys. Chem. Chem. Phys., 2008, 10, 3530
    DOI: 10.1039/B801785A

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