Hahn JR, Lee HJ, Ho W
Laboratory of Atomic and Solid State Physics and Cornell Center for Materials Research, Cornell University, Ithaca, New York 14853, USA.
Phys Rev Lett. 2000 Aug 28;85(9):1914-7. doi: 10.1103/PhysRevLett.85.1914.
Inelastic electron tunneling spectroscopy and microscopy with a scanning tunneling microscope revealed two vibrational modes showing a decrease in conductance at +/-82.0 and +/-38.3 mV sample bias for single oxygen molecules chemisorbed on the fourfold hollow sites of Ag(110) surface at 13 K. The spatial distribution of the vibrational intensities exhibited pi(g)-orbital (perpendicular to surface) symmetry of O2 with the molecular axis along the [001] direction. These results are attributed to resonant inelastic electron tunneling.
利用扫描隧道显微镜进行的非弹性电子隧穿光谱和显微镜研究表明，在13K温度下，吸附在Ag(110)表面四重中空位点上的单个氧分子，在样品偏压为+/-82.0和+/-38.3 mV时，有两种振动模式表现出电导下降。振动强度的空间分布显示，O2分子轴沿[001]方向时，具有垂直于表面的π(g)轨道对称性。这些结果归因于共振非弹性电子隧穿。
