Regensburg 2004 – wissenschaftliches Programm

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O: Oberflächenphysik

O 26: Adsorption an Oberflächen II

O 26.1: Vortrag

Dienstag, 9. März 2004, 15:45–16:00, H45

STM and STS study of Cu(111)-Cs — •Thomas von Hofe, Jörg Kröger, and Richard Berndt — Institut für Experimentelle und Angewandte Physik, Universität Kiel, D-24098 Kiel, Germany

Alkali-covered noble metal surfaces have been of theoretical and experimental interest for a long time since these are the simplest of metal-metal systems. Here we present first results of Cs-covered Cu(111) obtained by STM and STS experiments at 9K for coverages between approximately 0.3 and 0.9 ML. Cs does not grow in homogeneous films as one would expect, but a kind of island growth takes place. These islands reveal a p(2x2) LEED pattern and show a quantum well state whose lifetime has been measured.

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