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Lim, Hyunseob
School of Natural Science
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Reconstruction of steps on the Cu(111) surface induced by sulfur

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Title
Reconstruction of steps on the Cu(111) surface induced by sulfur
Author
Walen, HollyLiu, Da-JiangOh, JunepyoLim, HyunseobEvans, J. W.Kim, YousooThiel, P. A.
Issue Date
2015-05
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF CHEMICAL PHYSICS, v.142, no.19, pp.194711
Abstract
A rich menagerie of structures is identified at 5 K following adsorption of low coverages (<= 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
URI
https://scholarworks.unist.ac.kr/handle/201301/17612
URL
http://scitation.aip.org/content/aip/journal/jcp/142/19/10.1063/1.4921258
DOI
10.1063/1.4921258
ISSN
0021-9606
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PHY_Journal Papers
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