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Persistent URL http://purl.org/net/epubs/work/30249
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Record Id 30249
Title Structural analysis of the Ru(0 0 0 1)(1×1)-O and Ru(0 0 0 1)(2×1)-O structures by medium energy in scattering
Abstract Medium energy ion scattering using 100 keV H+ ions, has been used to investigate the structure of the (2×1) and (1×1) chemisorbed phases of atomic oxygen on Ru(0 0 0 1), aided by a new automated structural search routine. In both phases the O is found to occupy hcp hollow sites directly above second layer Ru atoms, while in the (1×1)-O surface the oxygen chemisorption induces an expansion of the outermost Ru layer spacing. More subtle subsurface structural modifications, and near-surface lateral and rumpling distortions of the Ru surface in the (2×1) phase were also investigated, but the amplitude of these distortions are not formally significant relative to the estimated precision. A 1.6 ML O coverage (1×1) surface phase showed clear evidence for subsurface oxygen and small changes in Ru subsurface layer spacings.
Organisation CCLRC , SND , MEIS
Keywords Physics
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Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article Surf Sci 491, no. 1-2 (2001): 208-218. doi:10.1016/S0039-6028(01)01405-4 2001