Strainology of Raman phonons in bended, periodically buckled, and rippled graphene

We perform a thorough study of the strainology of the Raman response in graphene, for different external perturbations, within the framework of a long-wavelength, effective field theory for the vibrational spectrum. We calculate the evolution of the G-peak for the cases of compressive and stretching...

Full description

Saved in:
Bibliographic Details
Published in:The European physical journal. B, Condensed matter physics Condensed matter physics, 2013-06, Vol.86 (6), Article 267
Main Authors: Santos, L.F., Silva Neto, M.B.
Format: Article
Language:English
Subjects:
Analysis
Complex Systems
Condensed Matter Physics
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Fluid- and Aerodynamics
Graphene
Graphite
Lattice dynamics
Phonons in low-dimensional structures and small particles
Physics
Physics and Astronomy
Regular Article
Solid State Physics
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We perform a thorough study of the strainology of the Raman response in graphene, for different external perturbations, within the framework of a long-wavelength, effective field theory for the vibrational spectrum. We calculate the evolution of the G-peak for the cases of compressive and stretching strains, and we discuss our results in connection to the physics of the G-peak redshift due to bending/uniaxial strain and the G-peak blueshift due to a substrate. Furthermore, we calculate the Raman response for the cases of periodic buckling of nanoribbons and within a toy model for ripples, and in both cases we are able to obtain a rather broad, D-like-peak in the Raman spectrum, even for the case of defect free graphene. We discuss all our theoretical results in connection to recent Raman spectroscopy experiments.
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/e2013-31007-7