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Significant work function changes from bare Pt(111) surface to 1 monolayer and 2 monolayers of ultrathin iron oxide (FeO) films on it are investigated by means of scanning tunneling microscopy/spectroscopy (STM/STS). With FeO layer-by-layer growth, a continuous reduction of the work function along with the surface vacuum level (VL) shifting is observed. We found that the compression of the electron...
The velocity and angular distributions of desorbing CO 2 in CO oxidation on Pd(110) were studied under the steady-state conditions with cross-correlation time-of-flight techniques. Sharp changes were found in both distributions at the switching point of the rate-determining step. The velocity curves involved fast and slow components. The fast one, which was suddenly suppressed at the switching...
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