Communication: Structure, formation, and equilibration of ensembles of Ag-S complexes on an Ag surface
TL;DR: In this paper, conditions of very low temperature (4.7 K) and very low sulfur coverage were used to isolate and identify Ag-S complexes that exist on the Ag(111) surface.
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Abstract: We have utilized conditions of very low temperature (4.7 K) and very low sulfur coverage to isolate and identify Ag-S complexes that exist on the Ag(111) surface. The experimental conditions are such that the complexes form at temperatures above the temperature of observation. These complexes can be regarded as polymeric chains of varying length, with an Ag4S pyramid at the core of each monomeric unit. Steps may catalyze the formation of the chains and this mechanism may be reflected in the chain length distribution.
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Citations
Self-organization of S adatoms on Au(111): √3R30° rows at low coverage.
Holly Walen,Da-Jiang Liu,Junepyo Oh,Hyunseob Lim,James W. Evans,James W. Evans,Yousoo Kim,Patricia A. Thiel,Patricia A. Thiel +8 more
TL;DR: 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.
45
Cu2S3 complex on Cu(111) as a candidate for mass transport enhancement
Holly Walen,Da-Jiang Liu,Junepyo Oh,Hyunseob Lim,James W. Evans,James W. Evans,Christine M. Aikens,Yousoo Kim,Patricia A. Thiel,Patricia A. Thiel +9 more
TL;DR: In this article, Walen et al. proposed the use of the Cu2S3 complex on Cu(111) as a candidate for mass transport enhancement, which was shown to be effective in improving the performance of mass transport.
37
Sulfur Atoms Adsorbed on Cu(100) at Low Coverage: Characterization and Stability against Complexation
Holly Walen,Da-Jiang Liu,Junepyo Oh,Hyun Jin Yang,Peter M. Spurgeon,Yousoo Kim,Patricia A. Thiel,Patricia A. Thiel +7 more
TL;DR: Density functional theory (DFT) corroborates the preferential population of terraces at low coverage as well as the step adsorption site, and a lattice gas model has been developed, and Monte Carlo simulations based on this model have been compared with the observed terrace configurations.
20
Identification of Au–S complexes on Au(100)
Holly Walen,Da-Jiang Liu,Junepyo Oh,Hyun Jin Yang,Yousoo Kim,Patricia A. Thiel,Patricia A. Thiel +6 more
TL;DR: Using a combination of scanning tunneling microscopy and density functional theory (DFT) calculations, a set of related Au-S complexes that form on Au(100), when sulfur adsorbs and lifts the hexagonal surface reconstruction are identified.
20
Search for the Structure of a Sulfur-Induced Reconstruction on Cu(111)
TL;DR: In this article, an extensive DFT-based search was carried out for the structure of the (√43 × √43)R ± 7.5° reconstruction of S on Cu(111), which exhibits a honeycomb-type structure in scanning tunneling microscopy (STM).
18
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