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arXiv · 0910.1281

Passing current through touching molecules

Guillaume Schull·Thomas Frederiksen·Mads Brandbyge·Richard Berndt
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Abstract

The charge flow from a single C60 molecule to another one has been probed. The conformation and electronic states of both molecules on the contacting electrodes have been characterized using a cryogenic scanning tunneling microscope. While the contact conductance of a single molecule between two Cu electrodes can vary up to a factor of three depending on electrode geometry, the conductance of the C60-C60 contact is consistently lower by two orders of magnitude. First-principles transport calculations reproduce the experimental results, allow a determination of the actual C60-C60 distances, and identify the essential role of the intermolecular link in bi- and trimolecular chains.

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Guillaume Schull, Thomas Frederiksen, Mads Brandbyge, Richard Berndt. 2009-10-07. Passing current through touching molecules. https://doi.org/10.1103/physrevlett.103.206803

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