Substitutional adsorption on K on Fe(100)

R.H. Bergmans, A.L.G.P. Brands, A.W. Denier van der Gon, W.C.A.N. Ceelen, H.H. Brongersma, P. Bielen, C. Creemers

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5 Citations (Scopus)

Abstract

The adsorption of potassium on Fe(100) was studied by time-of-flight forward scattering and recoiling spectroscopy (TOF-SARS), low energy electron diffraction (LEED) and Auger electron spectroscopy (AES). After heating to 650 K of the potassium saturated surface the formation of a p(3 × 3) potassium superstructure was observed by LEED. TOF-SARS experiments ruled out the adsorption of potassium in the on-top, bridge and four-fold hollow site. The only site which is in agreement with all experimental results is the substitutional site where K replaces an Fe atom of the topmost layer of the crystal. This is the first time a substitutional adsorption site has been found on a bcc surface. On an fcc surface such an adsorption site has been found recently for adsorption of sodium and potassium on Al(111).
Original languageEnglish
Pages (from-to)1-10
JournalSurface Science
Volume350
Issue number1-3
DOIs
Publication statusPublished - 1996

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