Evidence for size-dependent discrete dispersions in single-wall nanotubes

A. Kasuya, Y. Sasaki, Y. Saito, K. Tohji, Y. Nishina

Research output: Contribution to journalArticlepeer-review

309 Citations (Scopus)


Raman scattering spectra of single-wall nanotubes with mean radii 0.55, 0.65, and 1.0 nm show size-dependent multiple splittings of the optical phonon peak corresponding to the E2g mode in graphite. These splittings constitute the first experimental evidence for the unique feature of nanotubes that they exhibit discrete and diameter-dependent dispersions arising from their cylindrical symmetry. The observed dispersion is well explained on the basis of graphite, and shows possibilities of predicting and controlling the basic property of nanotubes in the zone-folding scheme.

Original languageEnglish
Pages (from-to)4434-4437
Number of pages4
JournalPhysical review letters
Issue number23
Publication statusPublished - 1997 Jun 9
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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