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Phys. Rev. B 79, 195417 (2009) [4 pages]

Effect of rotational stacking faults on the Raman spectra of folded graphene

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P. Poncharal1, A. Ayari1, T. Michel2, and J.-L. Sauvajol2
1Laboratoire de Physique de la Matière Condensée et Nanostructures (UMR CNRS 5586), Université Claude Bernard, 69622 Villeurbanne, France
2Laboratoire des Colloides, Verres et Nanomatériaux (UMR CNRS 5587), Université Montpellier II, 34095 Montpellier Cedex 5, France

Received 19 November 2008; revised 27 March 2009; published 14 May 2009

The Raman spectral signature of folded graphene layers for one to six layers was studied. Folding allows realization of rotational disorder in otherwise perfect samples. We show that the two-dimensional Raman band of the folded sample is up shifted compared to the unfolded sample. The evolution of the spectral signature with increasing number of layers is discussed.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.79.195417
DOI:
10.1103/PhysRevB.79.195417
PACS:
78.30.Na, 78.67.Ch, 73.22.Lp