Perturbation of Tunneling Processes by Mechanical Degrees of Freedom in Mesoscopic Junctions

Abstract

We investigate the perturbation in the tunneling current caused by non-adiabatic mechanical motion in a mesoscopic tunnel junction. A theory introduced by Caroli et al. \cite{bi1,bi2,bi3} is used to evaluate second order self-energy corrections for this non-equilibrium situation lacking translational invariance. Inelastic signatures of the mechanical degrees of freedom are found in the current-voltage $I(V)$ characteristics. These give rise to sharp features in the derivative spectrum, $d^{2}I/d{V}^2$.

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References in corpus (1)

• Uncertainty-principle noise in vacuum-tunneling transducers

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