%0 Journal Article
%T Unifying the low-temperature photoluminescence spectra of carbon nanotubes: the role of acoustic phonon confinement.
%+ Laboratoire Pierre Aigrain (LPA)
%+ Laboratoire Aimé Cotton (LAC)
%+ Laboratoire Charles Coulomb (L2C)
%A Vialla, Fabien
%A Chassagneux, Yannick
%A Ferreira, Robson
%A Roquelet, Cyrielle
%A Diederichs, Carole
%A Cassabois, Guillaume
%A Roussignol, Philippe
%A Lauret, Jean‐sébastien
%A Voisin, Christophe
%< avec comité de lecture
%Z Optique Cohérente et Non Linéaire
%@ 0031-9007
%J Physical Review Letters
%I American Physical Society
%V 113
%P 057402
%8 2014-07-30
%D 2014
%R 10.1103/PhysRevLett.113.057402
%Z Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Journal articles
%X At low temperature the photoluminescence of single-wall carbon nanotubes show a large variety of spectral profiles ranging from ultra narrow lines in suspended nanotubes to broad and asymmetrical line-shapes that puzzle the current interpretation in terms of exciton-phonon coupling. Here, we present a complete set of photoluminescence profiles in matrix embedded nanotubes including unprecedented narrow emission lines. We demonstrate that the diversity of the low-temperature luminescence profiles in nanotubes originates in tiny modifications of their low-energy acoustic phonon modes. When low energy modes are locally suppressed, a sharp photoluminescence line as narrow as 0.7 meV is restored. Furthermore, multi-peak luminescence profiles with specific temperature dependence show the presence of confined phonon modes.
%G English
%2 https://hal.science/hal-01066160/document
%2 https://hal.science/hal-01066160/file/Vialla.pdf
%L hal-01066160
%U https://hal.science/hal-01066160
%~ UNIV-PARIS7
%~ ENS-PARIS
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%~ LPA
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%~ UNIV-PSUD
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%~ LPA-OPT
%~ L2C
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%~ UNIV-PARIS-SACLAY
%~ UNIV-PSUD-SACLAY
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