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arXiv · 1212.6866

Massless Dirac fermions in epitaxial graphene on Fe(110)

A. Varykhalov·J. Sánchez-Barriga·P. Hlawenka·O. Rader
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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 σ-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).

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A. Varykhalov, J. Sánchez-Barriga, P. Hlawenka, O. Rader. 2012-12-31. Massless Dirac fermions in epitaxial graphene on Fe(110). https://arxiv.org/abs/1212.6866

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