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Volume 131, 2006
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Measuring single molecule conductance with break junctions

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Abstract

Single-molecule conductance measurements made under potential control provide a critical link between chemical and molecular electronic data. These measurements are made possible by the STM break-junction method introduced recently, but questions remain about its reliability. Here we report the use of a logarithmic current-to-voltage converter to examine a wide range of currents in an STM break junction study of octanedithiol, clearly showing both the gold-quantum wire regime and the single molecule conductance regime. We find two sets of molecular currents that we tentatively ascribe to different bonding geometries of the molecules in the break junction.

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Article information


Submitted
14 Jun 2005
Accepted
11 Jul 2005
First published
15 Sep 2005

Faraday Discuss., 2006,131, 145-154
Article type
Paper

Measuring single molecule conductance with break junctions

J. He, O. Sankey, M. Lee, N. Tao, X. Li and S. Lindsay, Faraday Discuss., 2006, 131, 145
DOI: 10.1039/B508434M

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