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Article
Self-organization of S adatoms on Au(111): √3R30° rows at low coverage
Journal of Chemical Physics
  • Holly L. Walen, Iowa State University
  • Da-Jiang Liu, Ames Laboratory
  • Junepyo Oh, RIKEN Surface and Interface Science Laboratory
  • Hyunseob Lim, RIKEN Surface and Interface Science Laboratory
  • James W. Evans, Iowa State University
  • Yousoo Kim, RIKEN Surface and Interface Science Laboratory
  • Patricia A. Thiel, Iowa State University
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2015
DOI
10.1063/1.4922929
Abstract
Using scanning tunneling microscopy, we observe an adlayer structure that is dominated by short rows of S atoms, on unreconstructed regions of a Au(111) surface. This structure forms upon adsorption of low S coverage (less than 0.1 monolayer) on a fully reconstructed clean surface at 300 K, then cooling to 5 K for observation. The rows adopt one of three orientations that are rotated by 30◦ from the close-packed directions of the Au(111) substrate, and adjacent S atoms in the rows are separated by √ 3 times the surface lattice constant, a. Monte Carlo simulations are performed on lattice-gas models, derived using a limited cluster expansion based on density functional theory energetics. Models which include long-range pairwise interactions (extending to 5a), plus selected trio interactions, successfully reproduce the linear rows of S atoms at reasonable temperatures.
Comments

The following article appeared in Journal of Chemical Physics 143, 014704 (2015); and may be found at doi: 10.1063/1.4922929.

Rights
Copyright 2015 American Institute of Physics. This araticle may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Copyright Owner
American Institute of Physics
Language
en
File Format
application/pdf
Citation Information
Holly L. Walen, Da-Jiang Liu, Junepyo Oh, Hyunseob Lim, et al.. "Self-organization of S adatoms on Au(111): √3R30° rows at low coverage" Journal of Chemical Physics Vol. 143 Iss. 1 (2015) p. 014704-1 - 014704-10
Available at: http://works.bepress.com/patricia_thiel/129/