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Updated: Jul 16, 2026

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
Determination of exciton-phonon coupling elements in single-walled carbon nanotubes by Raman overtone analysis
Andrew P Shreve1, Erik H Haroz, Sergei M Bachilo
1Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Abstract:
Raman excitation profiles are obtained and compared for carbon nanotube radial breathing mode (RBM) fundamental and overtone vibrations for 5 specific chiralities. Fitting of the Raman excitation data is performed using Raman transform theory. The Huang-Rhys factors obtained from the modeling are directly related to the magnitude of the RBM exciton-phonon coupling element, which is shown to be in a weak coupling limit. The values of exciton-phonon coupling strengths and the possible role of revealed non-Condon effects are in agreement with quantum-chemical modeling.
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