TY - JOUR
T1 - Measurement of single-molecule resistance by repeated formation of molecular junctions
AU - Xu, Bingqian
AU - Tao, Nongjian
PY - 2003/8/29
Y1 - 2003/8/29
N2 - The conductance of a single molecule connected to two gold electrodes was determined by repeatedly forming thousands of gold-motecule-gold junctions. Conductance histograms revealed well-defined peaks at integer multiples of a fundamental conductance value, which was used to identify the conductance of a single molecule. The resistances near zero bias were 10.5 ± 0.5, 51 ± 5, 630 ± 50, and 1.3 ± 0.1 megohms for hexanedithiol, octanedithiol, decanedithiol, and 4,4′ bipyridine, respectively. The tunneling decay constant (βN) for N-alkanedithiols was 1.0 ± 0.1 per carbon atom and was weakly dependent on the applied bias. The resistance and βN values are consistent with first-principles calculations.
AB - The conductance of a single molecule connected to two gold electrodes was determined by repeatedly forming thousands of gold-motecule-gold junctions. Conductance histograms revealed well-defined peaks at integer multiples of a fundamental conductance value, which was used to identify the conductance of a single molecule. The resistances near zero bias were 10.5 ± 0.5, 51 ± 5, 630 ± 50, and 1.3 ± 0.1 megohms for hexanedithiol, octanedithiol, decanedithiol, and 4,4′ bipyridine, respectively. The tunneling decay constant (βN) for N-alkanedithiols was 1.0 ± 0.1 per carbon atom and was weakly dependent on the applied bias. The resistance and βN values are consistent with first-principles calculations.
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U2 - 10.1126/science.1087481
DO - 10.1126/science.1087481
M3 - Article
C2 - 12947193
AN - SCOPUS:0042322640
SN - 0036-8075
VL - 301
SP - 1221
EP - 1223
JO - Science
JF - Science
IS - 5637
ER -