Electron-phonon coupling and Peierls transition in metallic nanotubes

Details Electron-phonon coupling and Peierls transition in metallic nanotubes Electron-phonon coupling and Peierls transition in metallic nanotubes

1999-10-22

arxiv.org/abs/cond-mat/9910362v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures, LaTex, submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.62.6975

We reexamine the putative Peierls transition in a (5,5) metallic nanotube. We show that the conduction electrons at the Fermi level do not couple to the longitudinal acoustic phonon but rather to a folded-in graphene zone edge phonon having the proper Kekule modulation symmetry. The calculation for the mean-field transition temperature gives 15 K, a value comparable to previous estimates. We discuss the significance of this transition temperature.

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