title: Interpretation of stochastic events in single-molecule measurements of conductance and transition voltage spectroscopy.
abstract: 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.
authors.affiliation: Theoretische Chemie, Universität Heidelberg, D-69120 Heidelberg, Germany. ioan.baldea@pci.uni-heidelberg.de
authors.forename: Ioan
authors.initials: I
authors.lastname: Bâldea