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Surface migration of ‘‘hot’’ adatoms in the course of dissociative chemisorption of oxygen on Al(111)
Open accessAbstract
Scanning-tunneling-microscopy observations on an Al(111) surface reveal that O adatoms at 300 K are practically immobile. Low-coverage overlayers formed by dissociative chemisorption of ${\mathrm{O}}_{2}$ consist essentially only of single isolated atoms rather than of pairs of adjacent atoms. Hence, upon dissociation, at least part of the chemisorption energy must be transformed into translational energy parallel to the surface which causes the two O atoms formed to separate from each other by at least 80 \AA{} before the excess energy is dissipated. The lifetime of these ``hot'' adatoms is estimated to be on the order of \ensuremath{\ge}1 ps.
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Cited by
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Wintterlin, J., Schuster, R., & Ertl, G. (1996) · Physical Review Letters · doi:10.1103/physrevlett.77.123 · Cited by 296
Self-citationSimulating the fabrication of aluminium oxide tunnel junctions
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Metadata
- Authors
- Brune, H., Wintterlin, J., Behm, R. J., & Ertl, G.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1992-02-03
- Volume
- 68
- Issue
- 5
- Pages
- 624-626
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W2075387907
- Cited by
- 311
- References
- 0
- FWCI
- 25.38
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Surface migration of ‘‘hot’’ adatoms in the course of dissociative chemisorption of oxygen on Al(111). https://app.cochat.ai/papers/10.1103/physrevlett.68.624
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- Brune, H., Wintterlin, J., Behm, R. J., & Ertl, G. (1992). Surface migration of ‘‘hot’’ adatoms in the course of dissociative chemisorption of oxygen on Al(111). Physical Review Letters. https://doi.org/10.1103/physrevlett.68.624
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