Polarization Dependence of Raman Spectra in Strained Graphene
arXiv:1009.1209 · doi:10.1103/PhysRevB.82.205407
Abstract
The polarization dependences of the G, D, and 2D (G) bands in Raman spectra at graphene bulk and edge are examined theoretically. The 2D and D bands have different selection rules at bulk and edge. At bulk, the 2D band intensity is maximum when the polarization of the scattered light is parallel to that of incident light, whereas the D band intensity does not have a polarization dependence. At edge, the 2D and D bands exhibit a selection rule similar to that of the G band proposed in a previous paper. We suggest that a constraint equation on the axial velocity caused by the graphene edge is essential for the dependence of the G band on the crystallographic orientation observed in the bulk of strained graphene. This is indicative of that the pseudospin and valleyspin in the bulk of graphene can not be completely free from the effect of surrounding edge. The status of the experiments on the G and D bands at the graphene edge is mentioned.
arXiv comment11 pages, 3 figures
References in corpus (27)
- The Raman Fingerprint of Graphene
- Spatially Resolved Raman Spectroscopy of Single- and Few-Layer Graphene
- Uniaxial Strain in Graphene by Raman Spectroscopy: G peak splitting, Gruneisen Parameters and Sample Orientation
- Electric Field Effect Tuning of Electron-Phonon Coupling in Graphene
- Raman Spectroscopy of Graphene Edges
- Size, Shape and Low Energy Electronic Structure of Carbon Nanotubes
- Self-passivating edge reconstructions of graphene
- Rayleigh Imaging of Graphene and Graphene Layers
- Non-adiabatic Kohn-anomaly in a doped graphene monolayer
- Electron scattering on microscopic corrugations in graphene
- Boundary conditions for Dirac fermions on a terminated honeycomb lattice
- Subjecting a graphene monolayer to tension and compression
- Evidence for Graphene Edges Beyond Zigzag and Armchair
- Compression Behavior of Single-layer Graphene
- Edge chirality determination of graphene by Raman spectroscopy
- Raman Topography and Strain Uniformity of Large-Area Epitaxial Graphene
- Symmetry of boundary conditions of the Dirac equation for electrons in carbon nanotubes
- Topological Phases in Graphitic Cones
- Gauge field for edge state in graphene
- Pseudospin and Deformation-induced Gauge Field in Graphene
- Local Energy Gap in Deformed Carbon Nanotubes
- Curvature induced optical phonon frequency shift in metallic carbon nanotubes
- Kohn Anomalies in Graphene Nanoribbons
- Determination of Edge Purity in Bilayer Graphene Using micro-Raman Spectroscopy
- Identifying the Orientation of Edge of Graphene Using G Band Raman Spectra
- Berry's Phase for Standing Wave Near Graphene Edge
- Chiral Gauge Theory for Graphene Edge
Cited by in corpus (4)
- Quantifying defects in graphene via Raman spectroscopy at different excitation energies
- Pseudospin for Raman D Band in Armchair Graphene Nanoribbons
- Interplay between uniaxial strain and magnetophonon resonance in graphene
- Long-wavelength optical phonon behavior in uniaxial strained graphene: Role of electron-phonon interaction