Single-layer metallicity and interface magnetism of epitaxial graphene on SiC(0001) (Articolo in rivista)

Type
Label
  • Single-layer metallicity and interface magnetism of epitaxial graphene on SiC(0001) (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Deretzis I, La Magna A (2011)
    Single-layer metallicity and interface magnetism of epitaxial graphene on SiC(0001)
    in Applied physics letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Deretzis I, La Magna A (literal)
Pagina inizio
  • 023113 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 98 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • IMM-Catania (literal)
Titolo
  • Single-layer metallicity and interface magnetism of epitaxial graphene on SiC(0001) (literal)
Abstract
  • We perform density functional theory calculations for the determination of the structural and electronic properties of epitaxial graphene on 4H-SiC(000 (1) over bar). Using commensurate supercells that minimize nonphysical stresses we show that in contrast with Si-face epitaxial films, the first graphene layer that forms on the C-face of SiC is purely metallic with its pi-bands partially preserved. Typical free-standing characteristics are fully recovered with a second graphene layer. We moreover discuss on the magnetic properties of the interface and the absence of Fermi-level pinning effects that could allow for a plausible device operation starting from the off-state. (literal)
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