Effects of low attenuation in a nanomechanical electron shuttle

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Author(s): D. V. Scheible, C. Weiss, R. H. Blick
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Article: Journal of Applied Physics 96, 1757 (2004), American Institute of Physics
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Abstract:: We have measured the spectral current characteristics of a nanomechanical electron shuttle in a tuning-fork configuration. This particular design enhances the quality factor Q of the nanoelectromechanical system. Comparing the experimental results to a precedingly studied low-Q device, we find a substantially different current behavior, indicating an increase of Q: the current flips direction around the frequency of mechanical resonance. We support our conclusion with a model calculation via a master equation. The device is nanomachined in silicon and shows response up to 0.5 GHz at room temperature.
URL: http://www.physik.uni-oldenburg.de/condmat/Papers/p_effects.ps.gz (application/x-gzip)