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FURTHER LEED INVESTIGATIONS OF MISSING ROW MODELS FOR THE CU(100)-(2-SQUARE-ROOT-2XSQUARE-ROOT-2)R45-DEGREES-O SURFACE-STRUCTURE

TitleFURTHER LEED INVESTIGATIONS OF MISSING ROW MODELS FOR THE CU(100)-(2-SQUARE-ROOT-2XSQUARE-ROOT-2)R45-DEGREES-O SURFACE-STRUCTURE
Publication TypeJournal Article
Year of Publication1990
AuthorsZeng, HC, Mitchell, KAR
JournalSurface Science
Volume239
PaginationL571-L578
Date PublishedDec
Type of ArticleLetter
ISBN Number0039-6028
Keywordschemisorption, CU(100), DIFFRACTION, OXYGEN
Abstract

Multiple scattering calculations have been made for a series of models for the O on Cu(100) chemisorption system in which there are missing atoms in the topmost metal layer, as well as additional missing row models to those considered previously. The best correspondence between experimental and calculated LEED intensities yet reached for the (2 square-root 2 X square-root 2)R45-degrees surface structure is obtained by extending the recently proposed missing row model [Surf. Sci. 208 (1989) L7] to include a 0.30 angstrom lateral relaxation for top layer copper atoms adjacent to the missing rows, and small (around 0.10 angstrom) vertical relaxations in both the first and second copper layers.
URL<Go to ISI>://A1990EP14800005