Spin-Controlled Nanomechanics Induced by Single-Electron Tunneling

D. Radic, A. Nordenfelt, A. M. Kadigrobov, R. I. Shekhter, M. Jonson, L. Y. Gorelik

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Abstract

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.

Original languageEnglish
Article number236802
Number of pages5
JournalPhysical Review Letters
Volume107
Issue number23
DOIs
Publication statusPublished - 30 Nov 2011

Keywords

  • POLARIZED TRANSPORT
  • CARBON NANOTUBES
  • MAGNETORESISTANCE

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