Electronic Aharonov-Bohm Effect Induced by Quantum Vibrations

Abstract

Mechanical displacements of a nanoelectromechanical system (NEMS) shift the electron trajectories and hence perturb phase coherent charge transport through the device. We show theoretically that in the presence of a magnetic feld such quantum-coherent displacements may give rise to an Aharonov-Bohm-type of effect. In particular, we demonstrate that quantum vibrations of a suspended carbon nanotube result in a positive nanotube magnetoresistance, which decreases slowly with the increase of temperature. This effect may enable one to detect quantum displacement fluctuations of a nanomechanical device.

4 pages, 3 figures

References in corpus (3)

• Electrical generation and absorption of phonons in carbon nanotubes
• The Aharonov-Bohm Interference and Beating in Single-Walled Carbon Nanotube Interferometers
• Electromechanical instability in suspended carbon nanotubes

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• Kondo Force in Shuttling Devices: Dynamical Probe for a Kondo Cloud
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• Interplay of magneto-elastic and polaronic effects in electronic transport through suspended carbon-nanotube quantum dots
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• Antiresonant quantum transport in ac driven molecular nanojunctions
• Dynamical electron transport through a nanoelectromechanical wire in a magnetic field
• Self-sustained oscillations in nanoelectromechanical systems induced by Kondo resonance