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Vibrational Instability due to Coherent Tunneling of Electrons

D. Fedorets·L. Y. Gorelik·R. I. Shekhter·M. Jonson
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Abstract

Effects of a coupling between the mechanical vibrations of a quantum dot placed between the two leads of a single electron transistor and coherent tunneling of electrons through a single level in the dot has been studied. We have found that for bias voltages exceeding a certain critical value a dynamical instability occurs and mechanical vibrations of the dot develop into a stable limit cycle. The current-voltage characteristics for such a transistor were calculated and they seem to be in a reasonably good agreement with recent experimental results for the single $C_{60}$-molecule transistor by Park et al.(Nature {\bf 407,} (2000) 57).

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D. Fedorets, L. Y. Gorelik, R. I. Shekhter, M. Jonson. 2002-04-26. Vibrational Instability due to Coherent Tunneling of Electrons. https://doi.org/10.1209/epl%2Fi2002-00611-3

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