The structure of K- and Cs-monolayers on Cu(0 0 1): diffraction experiments far from the Bragg point

Meyerheim, Holger L.; Wever, J.; Jahns, V.; Moritz, Wolfgang; Eng, P. J. und Robinson, Ian K. (1994): The structure of K- and Cs-monolayers on Cu(0 0 1): diffraction experiments far from the Bragg point. In: Physica B: Condensed Matter, Bd. 198, Nr. 1-3: S. 66-69

Abstract

The intensity analysis along the crystal truncation rods has been used to analyse in situ the adsorption behaviour and the structure of K and Cs on Cu(0 0 1) at submonolayer coverages and room temperature. Up to about 0.25 ML K atoms adsorb in hollow sites followed by formation of a quasihexagonal superstructure. In contrast, for Cs adsorption the data can be interpreted by the formation of quasihexagonal Cs islands that grow with increasing coverage. For K an effective radius of 1.6(1) Å independent of coverage is determined. For Cs we fnd d = 2.1 (1) Å after formation of the quasihexagonal superstructure.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Geowissenschaften > Department für Geo- und Umweltwissenschaften > Kristallographie und Materialwissenschaft
• Themengebiete: 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie
• Sprache: Englisch