Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9595323 | Surface Science | 2005 | 9 Pages |
Abstract
Pt(1Â 1Â 0) is one of the most closely investigated metal surface structures because it displays a variety of “missing-row” reconstructions, which are only marginally stable. The ground state is usually found to have 1Â ÃÂ 2 translational symmetry, but a 1Â ÃÂ 3 form has also been seen. Between 1Â ÃÂ 2 and 1Â ÃÂ 3, a series of disordered structures has been recorded, which shows a slight preference for 1Â ÃÂ 5 periodicity. Under the preparation conditions used in this study, a stable 1Â ÃÂ 5 structure was found for Pt(1Â 1Â 0). Investigation by surface X-ray diffraction has led to a complete three-dimensional structure, which closely resembles an alternation of 1Â ÃÂ 2 and 1Â ÃÂ 3 unit cells. Pt(1Â 1Â 0) shows an interesting example of two “homometric” structures that are indistinguishable by diffraction, but are distinguishable by virtue of their subsurface relaxation pattern.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
I.K. Robinson, M.C. Saint-Lager, P. Dolle, S. Boutet, M. De Santis, R. Baudoing-Savois,