Massless Dirac fermions in epitaxial graphene on Fe(110)

A. Varykhalov; J. Sánchez-Barriga; P. Hlawenka; O. Rader

Massless Dirac fermions in epitaxial graphene on Fe(110)

Materials Science 2013-01-01 v1

Authors: A. Varykhalov , J. Sánchez-Barriga , P. Hlawenka , O. Rader

Abstract

Graphene grown on Fe(110)by chemical vapor deposition using propylene is investigated by means of angle-resolved photoemission. The presence of massless Dirac fermions is clearly evidenced by the observation of a fully intact Dirac cone. Unlike Ni(111) and Co(0001), the Fe(110) imposes a strongly anisotropic quasi-one-dimensional structure on the graphene. Certain signatures of a superlattice effect appear in the dispersion of its \sigma-bands but the Dirac cone does not reveal any detectable superlattice or quantum-size effects although the graphene corrugation is twice as large as in the established two-dimensional graphene superlattice on Ir(111).

Keywords

graphene massless Dirac fermions Fe(110) angle-resolved photoemission Dirac cone epitaxial growth superlattice effect anisotropic structure

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@article{arxiv.1212.6866,
  title  = {Massless Dirac fermions in epitaxial graphene on Fe(110)},
  author = {A. Varykhalov and J. Sánchez-Barriga and P. Hlawenka and O. Rader},
  journal= {arXiv preprint arXiv:1212.6866},
  year   = {2013}
}

Massless Dirac fermions in epitaxial graphene on Fe(110)

Abstract

Keywords

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