Structure of the Si(111)-(5×2)-Au surface

Tadashi Abukawa, Yoshiki Nishigaya

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


The structure of the Si(111)-(5×2)-Au surface, one of the long-standing problems in surface science, has been solved by means of Weissenberg reflection high-energy electron diffraction. The arrangement of the Au atoms and their positions with respect to the substrate were determined from a three-dimensional Patterson function with a lateral resolution of 0.3 Å based on a large amount of diffraction data. The new structural model consists of six Au atoms in a 5×2 unit, which agrees with the recently confirmed Au coverage of 0.6 ML. The model has a distinct ×2 periodicity, and includes a Au dimer. The model is also compatible with previously obtained STM images.

Original languageEnglish
Article number036102
JournalPhysical Review Letters
Issue number3
Publication statusPublished - 2013 Jan 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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