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Shuttle-promoted nano-mechanical current switch

T. Song ; Leonid Y. Gorelik (Institutionen för teknisk fysik, Kondenserade materiens teori) ; Robert I. Shekhter ; M. N. Kiselev ; K. Kikoin
Applied Physics Letters (0003-6951). Vol. 107 (2015), 12, p. article no. 123104 .
[Artikel, refereegranskad vetenskaplig]

We investigate electron shuttling in three-terminal nanoelectromechanical device built on a movable metallic rod oscillating between two drains. The device shows a double-well shaped electromechanical potential tunable by a source-drain bias voltage. Four stationary regimes controllable by the bias are found for this device: (i) single stable fixed point, (ii) two stable fixed points, (iii) two limit cycles, and (iv) single limit cycle. In the presence of perpendicular magnetic field, the Lorentz force makes possible switching from one electromechanical state to another. The mechanism of tunable transitions between various stable regimes based on the interplay between voltage controlled electromechanical instability and magnetically controlled switching is suggested. The switching phenomenon is implemented for achieving both a reliable active current switch and sensoring of small variations of magnetic field.

Nyckelord: coulomb-blockade, systems, Physics

Denna post skapades 2015-10-16. Senast ändrad 2016-05-19.
CPL Pubid: 224383


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Institutioner (Chalmers)

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



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