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Title: Self-organization of S adatoms on Au(111): √3R30° rows at low coverage

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4922929· OSTI ID:22490873
 [1];  [2]; ; ;  [3];  [2];  [1]
  1. Department of Chemistry, Iowa State University, Ames, Iowa 50011 (United States)
  2. Ames Laboratory of the USDOE, Ames, Iowa 50011 (United States)
  3. RIKEN Surface and Interface Science Laboratory, Wako, Saitama 351-0198 (Japan)

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.

OSTI ID:
22490873
Journal Information:
Journal of Chemical Physics, Vol. 143, Issue 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
Country of Publication:
United States
Language:
English

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  • Hernandez-Tamargo, Carlos E.; Montero-Alejo, Ana Lilian; Pujals, Daniel Codorniu
  • The Journal of Chemical Physics, Vol. 141, Issue 4 https://doi.org/10.1063/1.4890997
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Cited By (5)

Sulfur-driven switching of the Ullmann coupling on Au(111) journal January 2018
Gold adatoms modulate sulfur adsorption on gold journal January 2019
Oxygen and sulfur adsorption on vicinal surfaces of copper and silver: Preferred adsorption sites journal March 2018
Adsorption of Te atoms on Au(1 1 1) and the emergence of an adatom-induced bound state journal February 2017
One-dimensional phosphorus chain and two-dimensional blue phosphorene grown on Au(111) by molecular-beam epitaxy text January 2017

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