TY - JOUR
T1 - D-band Raman intensity of graphitic materials as a function of laser energy and crystallite size
AU - Sato, K.
AU - Saito, R.
AU - Oyama, Y.
AU - Jiang, J.
AU - Cançado, L. G.
AU - Pimenta, M. A.
AU - Jorio, A.
AU - Samsonidze, Ge G.
AU - Dresselhaus, G.
AU - Dresselhaus, M. S.
N1 - Funding Information:
The TU authors acknowledge Dr. T. Nakanishi for useful discussions and a Grant-in-Aid (No. 16076201) from MEXT, Japan; we also thank Professor M. Endo for providing us with the heat-treated PPP samples. The UFMG authors acknowledge JST for the support for their travel to Sendai and they also acknowledge support from PRPq-UFMG, FAPEMIG and CNPq, Brazil. The MIT authors acknowledge support under NSF Grants DMR 04-05538.
PY - 2006/8/18
Y1 - 2006/8/18
N2 - The Raman intensity of the disorder-induced D-band in graphitic materials is calculated as a function of the in-plane size of the graphite nanoparticles (La) and as a function of the excitation laser energy. Matrix elements associated with the double resonance Raman processes, i.e., electron-photon, electron-phonon and electron-defect processes are calculated based on the tight binding method. The electron-defect interaction is calculated by considering the elastic scattering at the armchair edge of graphite, adopting a nanographite flake whose width is La. We compare the calculated results with the experimental results obtained from the spectra for different laser lines and La.
AB - The Raman intensity of the disorder-induced D-band in graphitic materials is calculated as a function of the in-plane size of the graphite nanoparticles (La) and as a function of the excitation laser energy. Matrix elements associated with the double resonance Raman processes, i.e., electron-photon, electron-phonon and electron-defect processes are calculated based on the tight binding method. The electron-defect interaction is calculated by considering the elastic scattering at the armchair edge of graphite, adopting a nanographite flake whose width is La. We compare the calculated results with the experimental results obtained from the spectra for different laser lines and La.
UR - http://www.scopus.com/inward/record.url?scp=33746763767&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33746763767&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2006.05.107
DO - 10.1016/j.cplett.2006.05.107
M3 - Article
AN - SCOPUS:33746763767
SN - 0009-2614
VL - 427
SP - 117
EP - 121
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -