Details

Autor(en) / Beteiligte

• Grüneis, A.
• Saito, R.
• Jiang, J.
• Samsonidze, Ge.G.
• Pimenta, M.A.
• Jorio, A.
• Souza Filho, A.G.
• Dresselhaus, G.
• Dresselhaus, M.S.

Titel

Resonant Raman spectra of carbon nanotube bundles observed by perpendicularly polarized light

Ist Teil von

• Chemical physics letters, 2004-04, Vol.387 (4), p.301-306

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2004

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• We calculated the resonance condition for the radial breathing Raman mode for single wall carbon nanotube (SWNT) bundles for light polarization parallel and perpendicular to the tube axis. The radial breathing modes that are not observed in isolated SWNTs, but are observed in SWNT bundles, are assigned to a resonance process for light with perpendicular polarization. Asymmetry between the valence and conduction π energy bands becomes essential for obtaining resonance conditions. We find that due to a high joint density of states, armchair SWNTs have the largest optical transition intensities.