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arXiv · 0812.2293

Observation of Exciton-Phonon Sideband in Individual Metallic Single-Walled Carbon Nanotubes

Hualing Zeng·Hongbo Zhao·Fu-Chun Zhang·Xiaodong Cui
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Abstract

Single-walled carbon nanotubes (SWCNTs) are quasi-one-dimensional systems with poor Coulomb screening and enhanced electron-phonon interaction, and are good candidates for excitons and exciton-phonon couplings in metallic state. Here we report back scattering reflection experiments on individual metallic SWCNTs. An exciton-phonon sideband separated by 0.19 eV from the first optical transition peak is observed in a metallic SWCNT of chiral index (13,10), which provides clear evidences of excitons in metallic SWCNTs. A static dielectric constant of 10 is estimated from the reflectance spectrum.

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Hualing Zeng, Hongbo Zhao, Fu-Chun Zhang, Xiaodong Cui. 2009-03-05. Observation of Exciton-Phonon Sideband in Individual Metallic Single-Walled Carbon Nanotubes. https://doi.org/10.1103/physrevlett.102.136406

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