화학공학소재연구정보센터
Journal of the American Chemical Society, Vol.134, No.18, 7958-7962, 2012
Interpretation of Stochastic Events in Single-Molecule Measurements of Conductance and Transition Voltage Spectroscopy
The first simultaneous measurements of transition voltage (V-t) spectroscopy (TVS) and conductance (G) histograms (Guo et al., J. Am. Chem. Soc. 2011, 133, 19189) form a great case for studying stochastic effects, which are ubiquitous in molecular junctions. Here an interpretation of those data is proposed that emphasizes the different physical content of V-t and G and reveals that fluctuations in the molecular orbital alignment have a significantly larger impact on G than initially claimed. The present study demonstrates the usefulness of corroborating statistical information on different transport properties and gives support to TVS as a valuable investigative tool.