Kiguchi M, Tal O, Wohlthat S, Pauly F, Krieger M, Djukic D, Cuevas J C, van Ruitenbeek J M
Kamerlingh Onnes Laboratory, Leiden University, Leiden, The Netherlands.
Phys Rev Lett. 2008 Jul 25;101(4):046801. doi: 10.1103/PhysRevLett.101.046801. Epub 2008 Jul 21.
Highly conductive molecular junctions were formed by direct binding of benzene molecules between two Pt electrodes. Measurements of conductance, isotopic shift in inelastic spectroscopy, and shot noise compared with calculations provide indications for a stable molecular junction where the benzene molecule is preserved intact and bonded to the Pt leads via carbon atoms. The junction has a conductance comparable to that for metallic atomic junctions (around 0.1-1G0), where the conductance and the number of transmission channels are controlled by the molecule's orientation at different interelectrode distances.
通过苯分子在两个铂电极之间的直接结合形成了高导电分子结。将电导测量、非弹性光谱中的同位素位移以及散粒噪声与计算结果进行比较，结果表明存在一种稳定的分子结，其中苯分子保持完整，并通过碳原子与铂引线键合。该结的电导与金属原子结的电导相当（约为0.1 - 1G0），在不同电极间距下，电导和传输通道的数量由分子的取向控制。
