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Nanoelectromechanics of shuttle devices

100%

Shekhter R. I., Gorelik L. Y., Krive I. V., Kiselev M. N., Parafilo A. V., Jonson M.

Nanoelectromechanical Systems

2013

vol. 1

1-25

A single-electron tunneling (SET) device with a nanoscale central island that can move with respect to the bulk sourceand drain electrodes allows for a nanoelectromechanical (NEM) coupling between the electrical current through the device and the mechanical vibrations of the island. Although the electromechanical “shuttle” instability and the associated phenomenon of single-electron shuttling were predicted more than 15 years ago, both theoretical and experimental studies of NEM-SET structures are still carried out. New functionalities based on quantum coherence, Coulomb correlations and coherent electron-spin dynamics are still of particular interest. In this article we present a short review of recent activities in this area.

Coupling between Electronic and Vibrational Excitations in Carbon Nanotubes Filled with C_{60} Fullerenes

84%

Utko P., Ferone R., Krive I., Shekhter R., Jonson M., Monthioux M., Noé L., Nygård J.

We investigate the low-temperature electron transport through C_{60} peapods, which are carbon nanotubes encapsulating C_{60} fullerenes. We find that the temperature dependence of the Coulomb blockade oscillations in peapod quantum dots deviates from conventional Breit-Wigner behavior, showing signatures of the Franck-Condon blockade of conductance. This indicates the presence of a coupling between electronic states and vibrational excitations. Unlike for suspended empty nanotubes, these are not intrinsic vibrational modes of the tube but mechanical vibrations of the encapsulated fullerenes that affect the electronic transport. Fullerene peapods thus emerge as a new class of nanoelectromechanical systems.

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1 Acta Physica Polonica A

1 Nanoelectromechanical Systems

1 2013

1 2011

2 Jonson M.

1 Ferone R.

1 Gorelik L. Y.

1 Kiselev M. N.

1 Krive I.

1 Krive I. V.

1 Monthioux M.

1 Noé L.

1 Nygård J.

1 Parafilo A. V.

1 Shekhter R.

1 Shekhter R. I.

1 Utko P.

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Nanoelectromechanics of shuttle devices

Coupling between Electronic and Vibrational Excitations in Carbon Nanotubes Filled with C_{60} Fullerenes