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Updated: May 28, 2026

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
Elastic exciton-exciton scattering in photoexcited carbon nanotubes
D T Nguyen1, C Voisin, Ph Roussignol
1Laboratoire Pierre Aigrain, Ecole Normale Supérieure, UPMC, Université Paris Diderot, CNRS UMR8551, 24 rue Lhomond 75231 Paris Cedex 5, France.
Abstract:
We report on original nonlinear spectral hole-burning experiments in single wall carbon nanotubes that bring evidence of pure dephasing induced by exciton-exciton scattering. We show that the collision-induced broadening in carbon nanotubes is controlled by exciton-exciton scattering as for Wannier excitons in inorganic semiconductors, while the population relaxation is driven by exciton-exciton annihilation as for Frenkel excitons in organic materials. We demonstrate that this singular behavior originates from the intrinsic one-dimensionality of excitons in carbon nanotubes, which display unique hybrid features of organic and inorganic systems.
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