Self-organized molecular-sized, hexagonally ordered SnOx nanodot superlattices on Pt(111)

Matthias Batzill, David E. Beck, Bruce E. Koel

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Complete oxidation of the -( v3 × v3)R30° Sn/Pt(111) surface alloy or submonolayer amounts of Sn adatoms on Pt(111) under ultrahigh vacuum conditions, forms a highly ordered, lateral superlattice of SnOx islands on the Pt(111) substrate. The island superstructure exhibits a sharp (5×5) low energy electron diffraction pattern. Scanning tunneling microscopy images show islands arranged in a hexagonal lattice, uniformly distributed over the whole sample. This island array is thermally stable up to 1050 K. The coincidence of the island periodicity with a multiple of the supporting substrate, and the same hexagonal symmetry of islands and substrate, suggests a strong island-substrate interaction. We propose that the island formation results from the breakup of a strained SnOx adlayer.

Original languageEnglish (US)
Pages (from-to)2766-2768
Number of pages3
JournalApplied Physics Letters
Volume78
Issue number18
DOIs
StatePublished - Apr 30 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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