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Room temperature Peierls distortion in small diameter nanotubes

Connétable, Damien and Rignanese, G.M. and Charlier, J.C. and Blase, Xavier Room temperature Peierls distortion in small diameter nanotubes. (2005) Physical review letters , vol. 94 (n° 1). pp. 015503-1-015503-4. 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
Other partners > Université Claude Bernard-Lyon I - UCBL (FRANCE)
Other partners > Katholieke Universiteit Leuven (BELGIUM)
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Deposited By:Damien CONNETABLE

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