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American Physical Society, Physical Review Letters, 21(105), 2010

DOI: 10.1103/physrevlett.105.216102

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Ordered vacancy network induced by the growth of epitaxial graphene on Pt(111)

Journal article published in 2010 by G. Otero, C. González ORCID, Al Anna Pinardi, A. L. Pinardi, P. Merino, S. Sara Gardonio, S. Silvano Lizzit, M. Blanco-Rey, K. Kevin van de Ruit, Cfj Kees Flipse, P. L. de Andrés, C. F. J. Flipse, J. Javier Méndez, Pl de Andres, Ja José Martin-Gago and other authors.
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This paper is available in a repository.

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Abstract

We have studied large areas of (√3×√3)R30° graphene commensurate with a Pt(111) substrate. A combination of experimental techniques with ab initio density functional theory indicates that this structure is related to a reconstruction at the Pt surface, consisting of an ordered vacancy network formed in the outermost Pt layer and a graphene layer covalently bound to the Pt substrate. The formation of this reconstruction is enhanced if low temperatures and polycyclic aromatic hydrocarbons are used as molecular precursors for epitaxial growth of the graphene layers.