Phys. Rev. B 77, 165419 (2008) [7 pages]Pinning of graphene to Ir(111) by flat Ir dotsReceived 12 April 2007; revised 6 February 2008; published 17 April 2008 Compact flat Ir islands form and are stable at 400 K when <0.1 monolayer of Ir is evaporated onto a graphene flake preadsorbed on Ir(111). Local density approximation calculations account for the Ir islands’ two dimensionality and their preferred sites on the substrate. They show that local sp3 bonding at once chemisorbs the dots above the graphene and firmly pins the graphene layer to the underlying metal. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.77.165419
DOI:
10.1103/PhysRevB.77.165419
PACS:
68.43.Bc, 68.43.Fg, 68.43.Hn, 61.46.−w
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