Improving transition voltage spectroscopy of molecular junctions

  title={Improving transition voltage spectroscopy of molecular junctions},
  author={Troels Markussen and Jing-Zhe Chen and Kristian Sommer Thygesen},
Transition voltage spectroscopy (TVS) is a promising spectroscopic tool for molecular junctions. The principles in TVS is to find the minimum on a Fowler-Nordheim plot where $\ln(I/V^2)$ is plotted against $1/V$ and relate the voltage at the minimum, $V_{\rm min}$, to the closest molecular level. Importantly, $V_{\rm min}$, is approximately half the voltage required to see a peak in the $dI/dV$ curve. Information about the molecular level position can thus be obtained at relatively low voltages… CONTINUE READING