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Reconstruction of steps on the Cu(111) surface induced by sulfur

TitleReconstruction of steps on the Cu(111) surface induced by sulfur
Publication TypeJournal Article
Year of Publication2015
AuthorsWalen, H, Liu, DJ, Oh, J, Lim, H, Evans, JW, Kim, Y, Thiel, PA
JournalJournal of Chemical Physics
Volume142
Pagination194711
Date Published05
Type of ArticleArticle
ISBN Number0021-9606
Accession NumberWOS:000355006200040
Keywordsmetal-surfaces, scanning-tunneling-microscopy, temperature
Abstract

= 0.05 monolayers) of S on Cu(111) at room temperature. This paper emphasizes the reconstructions at the steps. The A-type close-packed step has 1 row of S atoms along its lower edge, where S atoms occupy alternating pseudo-fourfold-hollow (p4fh) sites. Additionally, there are 2 rows of S atoms of equal density on the upper edge, bridging a row of extra Cu atoms, together creating an extended chain. The B-type close-packed step exhibits an even more complex reconstruction, in which triangle-shaped groups of Cu atoms shift out of their original sites and form a base for S adsorption at (mostly) 4fh sites. We propose a mechanism by which these triangles could generate Cu-S complexes and short chains like those observed on the terraces. (C) 2015 AIP Publishing LLC.

DOI10.1063/1.4921258
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Chemical Physics

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NSF