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Cu2S3 complex on Cu(111) as a candidate for mass transport enhancement
Physical Review B
  • Holly L. Walen, Iowa State University
  • Da-Jiang Liu, Ames Laboratory
  • Junepyo Oh, Surface and Interface Science Laboratory
  • Hyunseob Lim, Surface and Interface Science Laboratory
  • James W. Evans, Iowa State University
  • Christine M. Aikens, Kansas State University
  • Yousoo Kim, Surface and Interface Science Laboratory
  • Patricia A. Thiel, The Ames Laboratory (U.S. Department of Energy) and Iowa State University
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Publication Version
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Sulfur-metal complexes, containing only a few atoms, can open new, highly efficient pathways for transport of metal atoms on surfaces. For example, they can accelerate changes in the shape and size of morphological features, such as two-dimensional nanoclusters, over time. In this study we perform STM under conditions that are designed to specifically isolate such complexes. We find a new, unexpected S-Cu complex on the Cu(111) surface, which we identify as Cu2S3. We propose that Cu2S3 enhances mass transport in this system, which contradicts a previous proposal based on Cu3S3. We analyze bonding within these Cu-S complexes, identifying a principle for stabilization of sulfur complexes on coinage metal surfaces.

This article is from Physical Review B 91 (2015): 045426, doi: 10.1103/PhysRevB.91.045426. Posted with permission.

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American Physical Society
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Holly L. Walen, Da-Jiang Liu, Junepyo Oh, Hyunseob Lim, et al.. "Cu2S3 complex on Cu(111) as a candidate for mass transport enhancement" Physical Review B Vol. 91 Iss. 4 (2015) p. 045426-1 - 045426-7
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