Raman spectra of out-of-plane phonons in bilayer graphene
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The double resonance Raman spectra of the overtone of the out-of-plane tangential optical (oTO) phonon and of combinations of the LO, ZO, and ZA phonons with one another are calculated for bilayer graphene. In the case of the bilayer graphene, these Raman peaks are observed in the energy region between 1600 and 1800 cm-1. We obtain results for both the fixed q=0 and the dispersive q=2k peaks of the overtones of the oTO phonon of bilayer graphene. We calculate the double resonance Raman spectra of the combination modes coming from the LO, iTO, LA, and iTA phonons in bilayer graphene. The calculated Raman peaks are compared with the experimental results.
Date issued
2011-07Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Department of Physics; Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology)Journal
Physical Review B
Publisher
American Physical Society
Citation
Sato, Kentaro et al. “Raman spectra of out-of-plane phonons in bilayer graphene.” Physical Review B 84 (2011). ©2011 American Physical Society.
Version: Final published version
ISSN
1098-0121
1550-235X