Shuttle-promoted nano-mechanical current switch
Artikel i vetenskaplig tidskrift, 2015

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.





T. Song

Abdus Salam International Centre for Theoretical Physics

Leonid Gorelik

Chalmers, Teknisk fysik, Kondenserade materiens teori

Robert I. Shekhter

Göteborgs universitet

M. N. Kiselev

Abdus Salam International Centre for Theoretical Physics

K. Kikoin

Tel Aviv University

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 107 article no. 123104 - 123104