Magic clusters and (2 × 1) local structure formed in a half-unit cell of the Si(1 1 1)-(7 × 7) surface by Tl adsorption

P. Kocán, A. V. Visikovskiy, Y. Ohira, M. Yoshimura, K. Ueda, H. Tochihara

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Abstract

Formation of a (2 × 1) local structure is found at submonolayer growth of Tl on the Si(1 1 1)-(7 × 7) surface by means of scanning tunneling microscopy (STM). At low coverages, the (7 × 7) grid remains and the (2 × 1) structure is formed inside of the half-unit cells of the (7 × 7). The (2 × 1) coexists with other structures, such as of "magic" clusters observed in the case of all other group III metals. Based on our STM observations we propose an atomic arrangement of the (2 × 1) structure.

Original languageEnglish
Pages (from-to)7647-7650
Number of pages4
JournalApplied Surface Science
Volume254
Issue number23
DOIs
Publication statusPublished - Sep 30 2008

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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