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Few-layer graphene on SiC, pyrolitic graphite, and graphene: A Raman scattering study
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View: Figures


Image of FIG. 1.
FIG. 1.

Raman spectrum of a diameter HOPG disk. Inset: schematics of the, second order Raman scattering processes responsible for the band, the , bands, respectively. The phonon wave vector implied in both scattering processes is indicated in red.

Image of FIG. 2.
FIG. 2.

Raman spectra of the feature of (a) HOPG, of diameter HOPG thin disks with heights measured by AFM of (b) , (c) , (d) , and (e) . The solid, dashed lines are Lorentzian fits. These spectra have been normalized to the high energy component of the line to show the observed. Inset: amplitude ratio of the two components of the line as a function of the height of the graphite disk.

Image of FIG. 3.
FIG. 3.

Raman spectra of a substrate (a) of a graphitic residue on sample 1 of five to ten layers FLG on substrate (b) for sample 1, (c) for sample 2, of 70–90 layers epitaxial FLG (d), of exfoliated graphene (e). The solid lines are Lorentzian fits.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Few-layer graphene on SiC, pyrolitic graphite, and graphene: A Raman scattering study