title: Determination of exciton-phonon coupling elements in single-walled carbon nanotubes by Raman overtone analysis.
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.
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: Andrew P
authors.initials: AP
authors.lastname: Shreve
authors.forename: Erik H
authors.initials: EH
authors.lastname: Haroz
authors.forename: Sergei M
authors.initials: SM
authors.lastname: Bachilo
authors.forename: R Bruce
authors.initials: RB
authors.lastname: Weisman
authors.forename: Sergei
authors.initials: S
authors.lastname: Tretiak
authors.forename: Svetlana
authors.initials: S
authors.lastname: Kilina
authors.forename: Stephen K
authors.initials: SK
authors.lastname: Doorn