Interaction of Xenon at Surface Steps

Peter Zeppenfeld, Sebastian Horch, George Comsa

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Abstract

The adsorption of Xe on Pt(111) has been investigated using scanning tunneling microscopy. At low coverage Xe preferentially adsorbs on the upper edge of the preexisting Pt steps resulting in the formation of one-dimensional chains of Xe atoms. With increasing coverage the adsorption proceeds with the growth of compact 2D Xe islands nucleated on the Pt terraces and at the lower Pt step edges, but not adjacent to the Xe chains on the upper terraces. This is indicative of a repulsive interaction between the Xe chains and Xe atoms on the upper Pt terrace.
Original languageEnglish
JournalPhysical Review Letters
Volume73
Issue number9
Pages (from-to)1259-1262
ISSN0031-9007
DOIs
Publication statusPublished - 1994
Externally publishedYes

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