Spin controlled nanomechanics induced by single-electron tunneling

Radić, Danko and Nordenfelt, Anders and Kadigrobov, Anatoli and Shekhter, Robert and Jonson, Mats and Gorelik, Leonid (2011) Spin controlled nanomechanics induced by single-electron tunneling. Physical Review Letters, 107 (23). pp. 236802-5. ISSN 0031-9007

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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.

Item Type: Article
Keywords: quantum electromechanical systems (QNEMS), quantum dots, self-excited oscillations, spin-polarized transport, tunneling
Date: November 2011
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2011) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-1191458-1023
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 03 Jul 2014 13:23
Last Modified: 24 Feb 2016 15:01
URI: http://digre.pmf.unizg.hr/id/eprint/2054

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