Issue
EPL
Volume 82, Number 6, June 2008
Article Number 66002
Number of page(s) 6
Section Condensed Matter: Structural, Mechanical and Thermal Properties
DOI http://dx.doi.org/10.1209/0295-5075/82/66002
Published online 03 June 2008
EPL, 82 (2008) 66002
DOI: 10.1209/0295-5075/82/66002

Discrete breathers in carbon nanotubes

A. V. Savin1, 2 and Y. S. Kivshar2

1  Semenov Institute of Chemical Physics, Russian Academy of Sciences - Moscow 119991, Russia
2  Nonlinear Physics Center, Research School of Physical Sciences and Engineering, Australian National University Canberra, ACT 0200, Australia

asavin@center.chph.ras.ru

received 12 March 2008; accepted in final form 29 April 2008; published June 2008
published online 3 June 2008

Abstract
We study large-amplitude oscillations of carbon nanotubes with chiralities (m, 0) and (m, m) and predict the existence of spatially localized nonlinear modes in the form of discrete breathers. In nanotubes with the index (m, 0) we find three types of discrete breathers associate with longitudinal, radial, and torsion anharmonic vibrations, however only the twisting breathers are found to be nonradiating nonlinear modes which survive in a curved geometry described by a three-dimensional microscopic model and remain long-lived modes even in the presence of thermal fluctuations.

PACS
63.20.Pw - Localized modes.
63.20.Ry - Anharmonic lattice modes.
63.22.Gh - Nanotubes and nanowires.

© EPLA 2008