Spontaneously Symmetry-Broken Current in Coupled Nanomechanical Shuttles

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We investigate the transport and the dynamical properties of tunnel-coupled double charge shuttles. The oscillation frequencies of two shuttles are mode-locked to integer multiples of the applied voltage frequency $ω$. We show that left/right-symmetric double shuttles may generate direct net current due to bistable motions caused by parametric instability. The symmetry-broken direct current appears near $ω=Ω_{0}/(2j-1)$, ($j=1,2,...$), where $Ω_{0}$ is the dressed resonance frequency of the relative motion of the two shuttles.
Phys. Rev. Lett. (accepted)

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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/117380

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0610287
 http://arxiv.org/abs/cond-mat/0610287

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arXiv