Diffusion and clustering of Ag atoms on Si(111)7 × 7 surface

Jacek Osiecki, Hiroki Kato, Atsuo Kasuya, Shozo Suto

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6 Citations (Scopus)


We investigated the adsorption, diffusion, and clustering of Ag atoms on a Si(111)7 × 7 surface by scanning tunneling microscopy. The three kinds of structure, i.e., monomers, dimers, and clusters, were observed at a coverage of 0.02 monolayer of Ag atoms. In particular, dimers in unfaulted half unit cells (UHUCs) were observed. We found that monomers in UHUCs jump to the next HUCs with a lifetime of (5.6 ± 0.4) × 103 s. We also measured height oscillation for the cross section analysis of dimers in UHUCs and proposed that Ag dimers move along three stable sites in HUCs in 0.5 ms.

Original languageEnglish
Pages (from-to)2056-2058
Number of pages3
JournalJapanese Journal of Applied Physics
Issue number3 B
Publication statusPublished - 2006 Mar 27


  • Adsorption
  • Scanning tunneling microscopy
  • Silver
  • Surface diffusion


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