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arXiv · 0709.2538

Few layer graphene on SiC, pyrolitic graphite and graphene: a Raman scattering study

C. Faugeras·A. Nerriere·M. Potemski·A. Mahmood·E. Dujardin·C. Berger·W. A. de Heer
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Abstract

The results of micro-Raman scattering measurements performed on three different ``graphitic'' materials: micro-structured disks of highly oriented pyrolytic graphite, graphene multi-layers thermally decomposed from carbon terminated surface of 4H-SiC and an exfoliated graphene monolayer are presented. Despite its multi-layer character, most parts of the surface of the graphitized SiC substrates shows a single-component, Lorentzian shape, double resonance Raman feature in striking similarity to the case of a single graphene monolayer. Our observation suggests a very weak electronic coupling between graphitic layers on the SiC surface, which therefore can be considered to be graphene multi-layers with a simple (Dirac-like) band structure.

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C. Faugeras, A. Nerriere, M. Potemski, A. Mahmood, E. Dujardin, C. Berger, W. A. de Heer. 2007-12-07. Few layer graphene on SiC, pyrolitic graphite and graphene: a Raman scattering study. https://doi.org/10.1063/1.2828975

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