Polarized resonant Raman study of isolated single-wall carbon nanotubes: Symmetry selection rules, dipolar and multipolar antenna effects | Zendy

Ado Jório | Zendy; A. G. Souza Filho | Zendy; Victor W. Brar | Zendy; Anna K. Swan | Zendy; M. Selim Ünlü | Zendy; Bennett B. Goldberg | Zendy; A. Righi | Zendy; Jason H. Hafner | Zendy; Charles M. Lieber | Zendy; Riichiro Saito | Zendy; G. Dresselhaus | Zendy; M. S. Dresselhaus | Zendy

Open Access

Polarized resonant Raman study of isolated single-wall carbon nanotubes: Symmetry selection rules, dipolar and multipolar antenna effects

Author(s) -

Ado Jório,

A. G. Souza Filho,

Victor W. Brar,

Anna K. Swan,

M. Selim Ünlü,

Bennett B. Goldberg,

A. Righi,

Jason H. Hafner,

Charles M. Lieber,

Riichiro Saito,

G. Dresselhaus,

M. S. Dresselhaus

Publication year - 2002

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.65.121402

Subject(s) - raman spectroscopy , dipole , carbon nanotube , polarization (electrochemistry) , molecular physics , antenna (radio) , resonance (particle physics) , materials science , symmetry (geometry) , raman scattering , spectral line , optics , physics , condensed matter physics , atomic physics , nanotechnology , chemistry , geometry , telecommunications , mathematics , quantum mechanics , computer science , astronomy

We studied the polarization dependence of the resonance Raman spectra for several different isolated single- wall carbon nanotubes ~SWNTs!. One isolated SWNT acts as a dipolar antenna, polarized along the tube axis. For light polarized parallel to the tube axis, the strong resonance-effect breaks the symmetry-selection rules, and symmetry-forbidden modes appear in the Raman spectrum. When the light is not polarized parallel to the tube axis, G-band mode symmetries can be identified. UnusualG-mode intensity behavior is observed when the Raman signal is obtained from more than one SWNT, suggesting a complex multipolar antenna pattern.

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