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.

Original languageEnglish (US)
Pages (from-to)145-154
Number of pages10
JournalFaraday Discussions
Volume131
DOIs
StatePublished - 2006

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Molecules
Molecular electronics
molecules
Semiconductor quantum wires
molecular electronics
quantum wires
Gold
Telecommunication links
converters
gold
Geometry
Electric potential
electric potential
geometry
electronics

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Measuring single molecule conductance with break junctions. / He, Jin; Sankey, Otto; Lee, Myeong; Tao, Nongjian; Li, Xiulan; Lindsay, Stuart.

In: Faraday Discussions, Vol. 131, 2006, p. 145-154.

Research output: Contribution to journalArticle

He, Jin ; Sankey, Otto ; Lee, Myeong ; Tao, Nongjian ; Li, Xiulan ; Lindsay, Stuart. / Measuring single molecule conductance with break junctions. In: Faraday Discussions. 2006 ; Vol. 131. pp. 145-154.
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