Electronic Aharonov-Bohm Effect Induced by Quantum Vibrations

Details Electronic Aharonov-Bohm Effect Induced by Quantum Vibrations Electronic Aharonov-Bohm Effect Induced by Quantum Vibrations

2006-06-16

arxiv.org/abs/cond-mat/0606437v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.97.156801

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.

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