Dirac Cones and Minigaps for Graphene on Ir(111)

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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.
4 pages, 4 figures

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Materials Science, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/219560

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0807.2770
 http://arxiv.org/abs/0807.2770
 Phys. Rev. Lett. 102, 056808 (2009)
 doi:10.1103/PhysRevLett.102.056808

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arXiv