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Room temperature Peierls distortion in small diameter nanotubes

Connétable, Damien and Rignanese, Gian-Marco and Charlier, Jean-Christophe and Blase, Xavier Room temperature Peierls distortion in small diameter nanotubes. (2005) Physical review letters , vol. 94 (n° 1). pp. 015503-1. ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.94.015503

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.

Item Type:Article
Additional Information:Thanks to the American Physical Society editor. This publication is available at http://prl.aps.org/abstract/PRL/v94/i1/e015503
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Université Claude Bernard-Lyon I - UCBL (FRANCE)
Other partners > Katholieke Universiteit Leuven (BELGIUM)
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Deposited By: Damien CONNETABLE
Deposited On:23 Feb 2012 08:07

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