Discrete breathers in carbon nanotubesA. 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
received 12 March 2008; accepted in final form 29 April 2008; published June 2008
published online 3 June 2008
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.
63.20.Pw - Localized modes.
63.20.Ry - Anharmonic lattice modes.
63.22.Gh - Nanotubes and nanowires.
© EPLA 2008