Dirac cones and minigaps for graphene on Ir(111)

Pletikosić I, Kralj M, Pervan P, Brako R, Coraux J, N'Diaye A, Busse C, Michely T

Research article (journal)

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.

Details zur Publikation

Release year: 2009
Language in which the publication is written: English
Link to the full text: http://www.scopus.com/inward/record.url?eid=2-s2.0-61349174048&partnerID=40&md5=6e69ecd5944f610344070ef6f5a2c775