Adsorption site, growth, and structure of Co on Cu(111) determined by multiple-scattering analysis of x-ray-absorption spectra
- 15 October 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 52 (15), 11462-11466
- https://doi.org/10.1103/physrevb.52.11462
Abstract
The growth of cobalt on a Cu(111) single crystal is studied using x-ray-absorption spectroscopy. A polarization-dependent multiple-scattering analysis up to the fourth shell of neighbors using the f e f f code clearly shows that the thick films have a local hcp stacking (ABAB planes) and not the fcc stacking (ABCABC) of the substrate. Moreover, we determine that on a C surface type of the ABC Cu substrate, the Co atoms are first adsorbed on A sites, the second layer on B sites continues the Cu lattice, but the third Co layer already starts a hcp stacking, by mainly choosing A sites again.Keywords
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