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Self-organization of irregular nanoelectromechanical vibrations in multimode shuttle structures

L. Magnus Jonsson (Institutionen för teknisk fysik, Kondenserade materiens teori) ; Fabio Santandrea ; Leonid Y. Gorelik (Institutionen för teknisk fysik, Kondenserade materiens teori) ; Robert I. Shekhter ; Mats Jonson
Physical Review Letters (0031-9007 ). Vol. 100 (2008), 18, p. 186802.
[Artikel, refereegranskad vetenskaplig]

We investigate theoretically multimode electromechanical "shuttle" instabilities in dc voltage-biased nanoelectromechanical single-electron tunneling devices. We show that initially irregular (quasiperiodic) oscillations that occur as a result of the simultaneous self-excitation of several mechanical modes with incommensurable frequencies self-organize into periodic oscillations with a frequency corresponding to the eigenfrequency of one of the unstable modes. This effect demonstrates that a local probe can selectively excite global vibrations of extended objects.

Nyckelord: nanoelectromechanics, shuttling, carbon nanotube



Denna post skapades 2008-06-12. Senast ändrad 2008-06-12.
CPL Pubid: 71651

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Kondenserade materiens teori (1900-2015)
Institutionen för fysik (GU) (GU)

Ämnesområden

Mesoskopisk fysik

Chalmers infrastruktur