Room temperature Peierls distortion in small diameter nanotubes
(2005) Physical Review Letters — Vol. 94, n° 1 (2005)
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- Abstract
- By means of ab initio simulations, we investigate the phonon band structure and electron-phonon coupling in small 4-Angstrom diameter nanotubes. We show that both the C(5,0) and C(3,3) tubes undergo above room temperature a Peierls transition mediated by an acoustical long wavelength and an optical q=2k(F) phonon, respectively. In the armchair geometry, we verify that the electron-phonon coupling parameter lambda originates mainly from phonons at q=2k(F) and is strongly enhanced when the diameter decreases. These results question the origin of superconductivity in small diameter nanotubes.
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Connetable, D., Rignanese, G.-M., Charlier, J.-C., & Blase, X. (2005). Room temperature Peierls distortion in small diameter nanotubes. Physical Review Letters, 94(1). https://doi.org/10.1103/PhysRevLett.94.015503 (Original work published 2005)