Fabrication of shuttle-junctions for nanomechanical transfer of electrons

A V Moskalenko, Sergey Gordeev, O F Koentjoro, Paul Raithby, Robert French, Frank Marken, S Savel’ev

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We report on the fabrication of nanomechanical devices for shuttling of electrons from one electrode to another. Each device consists of a 20 nm diameter gold nanoparticle embedded within the gap between two gold electrodes. In two different kinds of shuttle-junctions the nanoparticle is attached to the electrodes through either (i) a single layer of 1,8-octanedithiol or (ii) a multilayer of 1-octanethiol molecules. The thiol layers play the role of 'damped springs', such that when a sufficient voltage bias is applied to the junction, the nanoparticle is expected to start oscillating and thereby transferring electrons from one electrode to the other. For both kinds of shuttle-junctions we observed an abrupt increase in the transmitted current above a threshold voltage, which can be attributed to a transition from the stationary to the oscillating regime. The threshold voltage was found to be lower for single-layer shuttle-junctions.
Original languageEnglish
Article number485202
Issue number48
Publication statusPublished - 2009

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    Moskalenko, A. V., Gordeev, S., Koentjoro, O. F., Raithby, P., French, R., Marken, F., & Savel’ev, S. (2009). Fabrication of shuttle-junctions for nanomechanical transfer of electrons. Nanotechnology, 20(48), [485202]. https://doi.org/10.1088/0957-4484/20/48/485202