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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/30249
Record Status
Checked
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
Contributors
P D Quinn (warwick)
,
D Brown (warwick)
,
D P Woodruff (warwick)
,
T C Q Noakes (cclrc)
,
P Bailey (cclrc)
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
Funding Information
Related Research Object(s):
Licence Information:
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
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