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Fabrication of shuttle-junctions for nanomechanical transfer of electrons

Moskalenko, Andriy, Gordeev, S. N., Koentjoro, O. F., Raithby, P. R., French, R. W., Marken, F. and Savel'ev, S. 2009. Fabrication of shuttle-junctions for nanomechanical transfer of electrons. Nanotechnology 20 (48) , 485202. 10.1088/0957-4484/20/48/485202

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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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Institute of Physics
ISSN: 0957-4484
Last Modified: 23 Mar 2017 04:01

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