English

Dirac Cones and Minigaps for Graphene on Ir(111)

Materials Science 2009-02-13 v2 Strongly Correlated Electrons
Authors: I. Pletikosic , M. Kralj , P. Pervan , R. Brako , J. Coraux , A. T. N'Diaye , C. Busse , T. Michely
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Abstract

Epitaxial graphene on Ir(111) prepared in excellent structural quality is investigated by angle-resolved photoelectron spectroscopy. It clearly displays a Dirac cone with the Dirac point shifted only slightly above the Fermi level. The moire resulting from the overlaid graphene and Ir(111) surface lattices imposes a superperiodic potential giving rise to Dirac cone replicas and the opening of minigaps in the band structure.

Keywords

graphene physics dirac cones and topological phases

Cite

@article{arxiv.0807.2770,
  title  = {Dirac Cones and Minigaps for Graphene on Ir(111)},
  author = {I. Pletikosic and M. Kralj and P. Pervan and R. Brako and J. Coraux and A. T. N'Diaye and C. Busse and T. Michely},
  journal= {arXiv preprint arXiv:0807.2770},
  year   = {2009}
}

Comments

4 pages, 4 figures

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