Shuttle Instability due to Resonant Tunneling of Electrons

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  • 27 June 2001
Abstract
The effect of the coupling between mechanical vibrations of the dot placed between two leads and resonant tunneling of electrons through a single level in the dot has been studied by means of the nonequilibrium Keldysh formalism. We have found that at voltages exceeding a certain critical value dynamical instability occurs and mechanical vibrations of the dot develop into a stable limit cycle. Current-voltage characteristics for the case of such developed regime were calculated and were found to be in a good agreement with the recent experiment with the single $C_{60}$-molecule transistor [Park et al., Nature {\bf 407,} 57 (2000)].

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