Destruction of graphene by metal adatoms

Details Destruction of graphene by metal adatoms Destruction of graphene by metal adatoms

2009-04-05

arxiv.org/abs/0904.0807v2

Physics

Condensed Matter

Materials Science

10 pages, 4 figures, few refs added, English improved, to appear in Appl. Phys. Lett

Scientific paper

The formation energies for mono- and bivacancies in graphene in the presence of adatoms of various metals and small metallic clusters have been calculated. It is shown that transition metal impurities, such as iron, nickel and, especially, cobalt reduce dramatically the vacancy formation energies whereas gold impurities have almost no effect on characteristics of the vacancies. This results highlight that special measures are required in order to protect graphene from damage by transition metal leads.

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