Electromechanical instability in suspended carbon nanotubes

Details Electromechanical instability in suspended carbon nanotubes Electromechanical instability in suspended carbon nanotubes

2005-03-19

arxiv.org/abs/cond-mat/0503497v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

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.

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