Intrinsic optical transition energies for isolated and individual single wall carbon nanotubes grown over trenches are measured using tunable resonant Raman scattering. Previously measured E22_S optical transitions from nanotubes in surfactants are blue shifted 70-90 meV with respect to our measurements of nanotubes in air. This large shift in the exciton energy is attributed to a larger change of the exciton binding energy than the band-gap renormalization as the surrounding dielectric constant increases.
@article{arxiv.cond-mat/0505004,
title = {Intrinsic Optical Transition Energies in Carbon Nanotubes},
author = {Yan Yin and Stephen Cronin and Andrew Walsh and Alexander Stolyarov and Michael Tinkham and Anthony Vamivakas and Wolfgang Bacsa and M. Selim Unlu and Bennett B Goldberg and Anna K. Swan},
journal= {arXiv preprint arXiv:cond-mat/0505004},
year = {2007}
}
Comments
Due to a mistake, a different paper was submitted as "revised v2". This is a re-submission of the origional version in order to correct the mistake