Order-disorder Phase Transition of the Cu(001) Surface under Equilibrium Oxygen Pressure
Journal Article
·
· Physical Review. B, Condensed Matter, 76(24):241404(R)
The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. In situ surface x-ray scattering is used to determine the stable oxygen-induced surface structure on Cu(001) at high temperatures and under equilibrium oxygen pressure. The structure is composed of a c(2x2)-O adlayer atop a randomly 3/4-filled Cu layer for temperatures between 473 and 1000 K. Below 473 K, the vacancies in the topmost Cu layer order to form a (2x square root 2 x square root 2)R45° missing row structure. This order-disorder transition is confirmed by first-principles calculations.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 959216
- Journal Information:
- Physical Review. B, Condensed Matter, 76(24):241404(R), Journal Name: Physical Review. B, Condensed Matter, 76(24):241404(R) Journal Issue: 24 Vol. 76; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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