Nonlinear strain effects in double-resonance Raman bands of graphite, graphene, and related materials
Del Corro, Elena (Universidad Complutense de Madrid. Departamento de Química Física)
Taravillo, Mercedes (Universidad Complutense de Madrid. Departamento de Química Física)
Garcia Baonza, Valentin (Universidad Complutense de Madrid. Departamento de Química Física)

Date:	2012
Abstract:	We analyze the influence of biaxial strain on the double-resonance (D and 2D) Raman bands of graphite-related materials. A substantial nonlinear dependence of these bands with the strain is observed, evidencing a quite different effect on the electronic structure around the K and Γ points of the first Brillouin zone. The strain dependence of the Grüneisen parameters is also analyzed and discussed. We suggest an application of Raman spectroscopy in graphite-related systems, based on the frequency difference observed between the G and D bands (or half the frequency of the 2D features in undefective samples), to provide a measure of the local strain.
Grants:	Ministerio de Ciencia e Innovación CTQ2009-14596-C02-01 Ministerio de Educación y Ciencia CSD2007-00045
Rights:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Published in:	Physical review B : Condensed matter and materials physics, Vol. 85, Issue 3 (January 2012) , art. 033407, ISSN 1550-235X

DOI: 10.1103/PhysRevB.85.033407

Postprint 6 p, 400.9 KB

The record appears in these collections:
Articles > Research articles
Articles > Published articles