Phonon-induced dephasing in single-wall carbon nanotubes Auteur(s): Nguyen D. T., Voisin C., Roussignol Ph., Roquelet C., Lauret Jean‐sébastien, Cassabois G. (Article) Publié: -Physical Review B Condensed Matter And Materials Physics (1998-2015), vol. 84 p.115463-115467 (2011) Texte intégral en Openaccess : Ref HAL: hal-00627579_v1 DOI: 10.1103/PhysRevB.84.115463 WoS: 000295325800007 Exporter : BibTex | endNote 17 Citations Résumé: We report on original nonlinear spectral hole-burning experiments in ensembles of single-wall carbon nanotubes. We have measured the temperature dependence of the excitonic homogeneous linewidth from 5 K up to room temperature. We show that the phonon-induced broadening in the weak coupling regime predominantly consists in pure dephasing. We present theoretical calculations of the exciton scattering rate due to phonon absorption within a one-dimensional framework for both excitons and phonons. We obtain a fair agreement with our experimental data and we discuss the specific properties of the exciton-phonon coupling in single-wall carbon nanotubes. |