Spin-controlled nanomechanics induced by single-electron tunneling
Journal article, 2011

We consider dc-electronic transport through a nanowire suspended between normal- and spin-polarized metal leads in the presence of an external magnetic field. We show that magnetomotive coupling between the electrical current through the nanowire and vibrations of the wire may result in self-excitation of mechanical vibrations. The self-excitation mechanism is based on correlations between the occupancy of the quantized electronic energy levels inside the nanowire and the velocity of the nanowire. We derive conditions for the occurrence of the instability and find stable regimes of mechanical oscillations.


single-electron tunneling



Danko Radic

Chalmers, Applied Physics, Condensed Matter Theory

Anders Nordenfelt

University of Gothenburg

Anatoli M. Kadigrobov

University of Gothenburg

Robert I. Shekhter

University of Gothenburg

Mats Jonson

University of Gothenburg

Leonid Gorelik

Chalmers, Applied Physics, Condensed Matter Theory

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 107 23

Quantum Nanoelectromechanical Systems (QNEMS)

European Commission (FP7), 2009-09-01 -- 2012-08-31.

Subject Categories

Condensed Matter Physics



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