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Title: Shuttle-promoted nano-mechanical current switch

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.
Authors:
;  [1] ;  [2] ;  [3] ;  [4]
  1. Condensed Matter and Statistical Physics Section, The Abdus Salam International Center for Theoretical Physics, I-34151 Trieste (Italy)
  2. Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg (Sweden)
  3. Department of Physics, University of Gothenburg, SE-412 96 Göteborg (Sweden)
  4. School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978 (Israel)
Publication Date:
OSTI Identifier:
22482140
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CURRENTS; ELECTRIC POTENTIAL; ELECTRONS; INSTABILITY; LIMIT CYCLE; LORENTZ FORCE; MAGNETIC FIELDS; POTENTIALS; SENSORS; SWITCHES