Determination of exciton-phonon coupling elements in single-walled carbon nanotubes by Raman overtone analysis

Andrew P. Shreve, Erik H. Haroz, Sergei M. Bachilo, R. Bruce Weisman, Sergei Tretiak, Svetlana Kilina, Stephen K. Doorn

Research output: Contribution to journalArticlepeer-review

65 Citations (Scopus)

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.

Original languageEnglish
Article number037405
JournalPhysical Review Letters
Volume98
Issue number3
DOIs
Publication statusPublished - 2007
Externally publishedYes

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