Pradhan Nilay A, Liu Ning, Ho Wilson
Department of Physics and Astronomy, University of California, Irvine, California 92697-4575, USA.
J Phys Chem B. 2005 May 5;109(17):8513-8. doi: 10.1021/jp045289b.
A scanning tunneling microscope is used to study the differential conductance (dI/dV) of single C(60) molecules in isolation and in monolayers adsorbed on NiAl(110) and on an ultrathin alumina film grown on the NiAl(110) surface. On the oxide layer, the electronic bands in the dI/dV spectra display a series of equally spaced features, attributed to the vibronic states of the molecules, which are absent when the molecules are adsorbed on the metal. A comparison between the molecular spectra measured on the oxide film reveals the effect of adsorption temperature and geometry, as well as intermolecular interactions on the vibronic features.
扫描隧道显微镜用于研究孤立的单个C(60)分子以及吸附在NiAl(110)和生长在NiAl(110)表面的超薄氧化铝膜上的单层C(60)分子的微分电导(dI/dV)。在氧化物层上，dI/dV光谱中的电子能带显示出一系列等间距的特征，这归因于分子的振动电子态，而当分子吸附在金属上时这些特征不存在。在氧化膜上测量的分子光谱之间的比较揭示了吸附温度和几何结构以及分子间相互作用对振动电子特征的影响。
