Dirac Cones and Minigaps for Graphene on Ir(111)

2008/07/31 by I. Pletikosic, I. Pletikosić, Marko Kralj +12 · 3 citations
Materials Science · Physics and Astronomy · #Boron and Carbon Nanomaterials Research #Graphene research and applications #Topological Materials and Phenomena #cond-mat.mtrl-sci #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.102.056808

published as Phys. Rev. Lett. 102, 056808 (2009) · 4 pages, 4 figures

openalex publication_date 2009/02/06 · arxiv created 2009/02/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

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 moiré 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.

Citations

• Modeling extended contacts for nanotube and graphene devices
• Electric Field Effect in Atomically Thin Carbon Films
• The electronic properties of graphene

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