Scanning tunneling microscopy of the local atomic structure of two-dimensional gold and silver islands on graphite

Eric Ganz, Klaus Sattler, John Clarke

Research output: Contribution to journalArticle

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Abstract

Small, two-dimensional islands of silver and gold formed in situ by evaporation onto graphite cleaved in ultrahigh vacuum are imaged atom by atom with a scanning tunneling microscope. These islands contain ordered regions of roughly 50 atoms in rectangular lattices, incommensurate with the substrate lattice, that are not close packed as in the bulk fcc structure. In one series of images, the shorter lattice spacing remained constant at 2.35 0.15 A whereas the longer decreased from 4.05 0.1 to 3.50.1 A over a period of roughly 10 min.

Original languageEnglish (US)
Pages (from-to)1856-1859
Number of pages4
JournalPhysical Review Letters
Volume60
Issue number18
DOIs
StatePublished - Jan 1 1988

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