The structure of Al(111) (√3x√3)R30° K determined by LEED: Stable and metastable adsorption sites

C. Stampfl, J. Burchhardt, Martin Meedom Nielsen, D.L. Adams, M. Scheffler, H. Over, W. Moritz

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

It is found that the adsorption of potassium on Al(111) at 90 K and at 300 K both result in a (square-root 3 x square-root 3)R30-degrees structure. Through a detailed LEED analysis it is revealed that at 300 K the adatoms occupy substitutional sites and at 90 K the adatoms occupy on-top sites; both geometries have hitherto been considered as very unusual. The relationship between bond length and coordination is discussed with respect to the present results, and with respect to other quantitative studies of alkali-metal/metal adsorption systems.
Original languageEnglish
JournalSurface Science
Volume287
Issue numberPart A
Pages (from-to)418-422
ISSN0039-6028
DOIs
Publication statusPublished - 1993
Externally publishedYes
Event8th International Conference on Solid Surfaces (ICSS-8)/12th Unthernational Vacuum congress (IVC-12) - The Hague, Netherlands
Duration: 11 Oct 199215 Oct 1992
Conference number: 8/12

Conference

Conference8th International Conference on Solid Surfaces (ICSS-8)/12th Unthernational Vacuum congress (IVC-12)
Number8/12
CountryNetherlands
CityThe Hague
Period11/10/199215/10/1992

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