Screening of excitons in single, suspended carbon nanotubes
Files
Accepted manuscript
Date
2007-06-01
Authors
Walsh, A. G.
Vamivakas, A. Nickolas
Yin, Yan
Cronin, Stephen B.
Unlu, M. Selim
Goldberg, Bennett B.
Swan, Anna K.
Version
Accepted manuscript
OA Version
Citation
A.G. Walsh, A.N. Vamivakas, Y. Yin, S.B. Cronin, M.S. Unlu, B.B. Goldberg, A.K. Swan. 2007. "Screening of excitons in single, suspended carbon nanotubes." NANO LETTERS, Volume 7, Issue 6, pp. 1485 - 1488. https://doi.org/10.1021/nl070193p
Abstract
Resonant Raman spectroscopy of single carbon nanotubes suspended across trenches displays red-shifts of up to 30 meV of the electronic transition energies as a function of the surrounding dielectric environment. We develop a simple scaling relationship between the exciton binding energy and the external dielectric function and thus quantify the effect of screening. Our results imply that the underlying particle interaction energies change by hundreds of meV.