Surface Molecular Chain Reaction Initiated at STM-Made Individual Active Sites
- 26 April 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 82 (17) , 3448-3451
- https://doi.org/10.1103/physrevlett.82.3448
Abstract
The tip of a scanning tunneling microscope is used to manipulate individual atoms and to create, at predetermined sites on a germanium surface, single atom vacancies whose structure permits a selective reactivity towards molecular oxygen. These atomic vacancies appear to self-regenerate after reaction with oxygen, resulting in a remarkable oxygen induced chain reaction. Measured reaction parameters, such as chain breaking probabilities, are shown to provide access to detailed site dependent oxidation and diffusion rates of the atomic vacancies.Keywords
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