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Phonon band structure and electron-phonon interactions in metallic nanowires

Verstraete, M.J. and Gonze, X. (2006) Phonon band structure and electron-phonon interactions in metallic nanowires. Physical Review B, 74. Art. No. 153408. ISSN 1550-235x

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Abstract

We present first-principles calculations of the phonon band structure and electron-phonon coupling in thin metallic nanowires. A full Brillouin zone analysis of the phonons is mandatory for the investigation of the nanowire structural stability: all the examined unstrained nanowires show instabilities whose wave vectors are located off the zone center. The unstable phonon modes are transverse, leading to a transition without a gap opening, in contrast with the usual Peierls distortion picture. Electron-phonon coupling yields orders-of-magnitude changes depending on the nanowire structure.

Item Type: Article
Copyright, Publisher and Additional Information: © 2006 American Physical Society. This is an author produced version of a paper published in Physical Review B. Uploaded in accordance with the publisher's self archiving policy.
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: Physics Import
Date Deposited: 07 Aug 2008 13:06
Last Modified: 07 Aug 2008 13:07
Published Version: http://link.aps.org/abstract/PRB/v74/e153408
Status: Published
Publisher: American Physical Society
Refereed: Yes
Identification Number: 10.1103/PhysRevB.74.153408
URI: http://eprints.whiterose.ac.uk/id/eprint/4040

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