In situ observation of gold adsorption onto si(Lll)7 x 7 surface by scanning tunneling microscopy

Tsuyoshi Hasegawa, Sumio Hosaka, Shigeyuki Hosoki

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Gold adsorption onto a Si(l 11)7x7 surface is studied in situ by Scanning Tunneling Microscopy (STM). Gold is deposited onto the Si(l 11)7 x 7 surface, kept at 500°C during the STM observation. The 5x2 structure grows at a step edge and expands towards both the higher and lower terraces. Si islands are also formed during the gold deposition. These phenomena are explained by the production and migration of excess Si atoms during the phase transition from the 7 x 7 to the 5 x 2 structure.

Original languageEnglish
Pages (from-to)L1492-L1494
JournalJapanese Journal of Applied Physics
Issue number10
Publication statusPublished - 1992
Externally publishedYes



  • Gold adsorption
  • Si(111)5 x 2-au
  • Si(111)7x7

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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