Chemistry, Physics and Astronomy, Materials Science and Engineering, Ames Laboratory
Journal or Book Title
Journal of Chemical Physics
Arich menagerie of structures is identified at 5Kfollowing adsorption of lowcoverages (≤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.
Copyright 2015 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
American Institute of Physics
Walen, Holly L.; Liu, Da-Jiang; Oh, Junepyo; Lim, Hyunseob; Evans, James W.; Kim, Yousoo; and Thiel, Patricia A., "Reconstruction of steps on the Cu(111) surface induced by sulfur" (2015). Chemistry Publications. 84.