Magnetic damping of a carbon nanotube nano-electromechanical resonator

A suspended, doubly clamped single-wall carbon nanotube is characterized at cryogenic temperatures. We observe specific switching effects in dc-current spectroscopy of the embedded quantum dot. These have been identified previously as nano-electromechanical self-excitation of the system, where positive feedback from single-electron tunneling drives mechanical motion. A magnetic field suppresses this effect, by providing an additional damping mechanism. This is modeled by eddy current damping, and confirmed by measuring the resonance quality factor of the radio-frequency-driven nano-electromechanical resonator in an increasing magnetic field.

• Publication year

  2012

• Venue

  New Journal of Physics

• Publication date

  2012-03-11

• Fields of study

  Physics

• Identifiers
  DOI 10.1088/1367-2630/14/8/083024arXiv 1203.2319
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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