The Raman cross section for the pentagonal pinch mode of C-60 at 1469 cm(-1) has been determined at a laser excitation wavelength lambda(L) = 752.5 nm. The experimental value, d sigma/d Omega = (2.09 +/- 0.29) x 10(-29) cm(2)/sr, is found to be in good agreement with predictions from an ab initio calculation based on density functional perturbation theory. A simple bond polarizability model with parameters obtained from hydrocarbon Raman measurements yields Raman intensities in C-60 within one order of magnitude of the experimental data.
Raman cross section for the pentagonal-pinch mode in buckminsterfullerene C-60 / Lorentzen, J. D.; Guha, S.; Menendez, J.; Giannozzi, P.; Baroni, S.. - In: CHEMICAL PHYSICS LETTERS. - ISSN 0009-2614. - 270:1-2(1997), pp. 129-134. [10.1016/S0009-2614(97)00337-0]
Raman cross section for the pentagonal-pinch mode in buckminsterfullerene C-60
Giannozzi, P.;Baroni, S.
1997-01-01
Abstract
The Raman cross section for the pentagonal pinch mode of C-60 at 1469 cm(-1) has been determined at a laser excitation wavelength lambda(L) = 752.5 nm. The experimental value, d sigma/d Omega = (2.09 +/- 0.29) x 10(-29) cm(2)/sr, is found to be in good agreement with predictions from an ab initio calculation based on density functional perturbation theory. A simple bond polarizability model with parameters obtained from hydrocarbon Raman measurements yields Raman intensities in C-60 within one order of magnitude of the experimental data.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
