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IBM Journal of Research and Development  
Volume 30, Number 4, Page 403 (1986)
Scanning Tunneling Microscopy I
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Defects on the Pt(100) surface and their influence on surface reactions—A scanning tunneling microscopy study

by W. Hosler, R. J. Behm, E. Ritter
Structural differences between a clean, reconstructed Pt(100) surface and one exhibiting chemical or structural irregularities have been identified by means of a scanning tunneling microscope. The (temperature-dependent) defect structure of a surface which had undergone a phase transition involving mass transport was characterized and compared to results obtained using other techniques. The catalytic activity of surface step sites was probed by the thermal decomposition of ethylene. The resulting surface roughening and buildup of carbon, which could be resolved in STM images, clearly showed that the decomposition proceeds from terrace edges.
Related Subjects: Scanning tunneling microscopy; Surface science