Raman spectra of misoriented bilayer graphene

By P. Poncharal, A. Ayari, T. Michel, J. Sauvajol. 2008

179 citations recorded by the source corpus.

We compare the main feature of the measured Raman scattering spectra from single layer graphene with a bilayer in which the two layers are arbitrarily misoriented. The profiles of the 2D bands are very similar having only one component, contrary to the four found for commensurate Bernal bilayers. These results agree with recent theoretical calculations and point to the similarity of the electronic structures of single layer graphene and misoriented bilayer graphene. Another new aspect is that the dependance of the 2D frequency on the laser excitation energy is different in these two latter systems.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/bc0f5b35c2d580074b9fa3d74b80f796ec470250

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

Citations in the corpus

Graphene substrates promote adherence of human osteoblasts and mesenchymal stromal cells (2010, background): “misoriented relative to one another [22].”
Novel effects of strains in graphene and other two dimensional materials (2015, background): “The simplest of these, multilayer graphene, has been found showing different stackings and alignments.[6, 286, 299] On the other hand, graphene grown or deposited over different insulating crystals such as SiC and hBN is a common occurrence in experiments.”
Electronic properties of graphene-based bilayer systems (2015, background): “These results are in contradiction with those obtained by Landau level [351] and Raman [360] spectroscopies (see the previous paragraph).”
Graphene synthesis by chemical vapor deposition and transfer by a roll-to-roll process (2010, background): “[21-23] By tracking the 2D peak across our sample, we see that single- or few-layer regions can be up to several tens of μm in lateral size.”
Raman Spectroscopic Characterization of Graphene (2010, result): “However, in studies reported by Poncharal and Ayari (45) and Calizo et al.”