Single molecule thermal rotation and diffusion: Acetylene on Cu(001)
作者： L. J. Lauhon , W. Ho
DOI: 10.1063/1.479863
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摘要: A variable temperature scanning tunneling microscope was used to directly observe the thermally induced rotation of a single acetylene molecule between two equivalent orientations on Cu(001) above 68 K. Measurements rate as function yielded an energy barrier 169±3 meV and preexponential factor 1011.8±0.2 s−1. Thermal diffusion individual molecules monitored 178 K by tracking. 0.53±0.01 eV 1013.6±0.2 s−1 were determined measuring hopping temperature.
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