Electromechanical Instability in Suspended Carbon Nanotubes
Abstract
We have theoretically investigated electromechanical properties of freely suspended carbon nanotubes when a current is injected into the tubes using a scanning tunneling microscope. We show that a shuttle-like electromechanical instability can occur if the bias voltage exceeds a dissipation-dependent threshold value. An instability results in large amplitude vibrations of the carbon nanotube bending mode, which modify the current-voltage characteristics of the system.
- Publication:
-
Nano Letters
- Pub Date:
- June 2005
- DOI:
- 10.1021/nl050531r
- arXiv:
- arXiv:cond-mat/0503497
- Bibcode:
- 2005NanoL...5.1165J
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- doi:10.1021/nl050531r