Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2008-02-18
Physics
Condensed Matter
Statistical Mechanics
11 pages, 4 figures
Scientific paper
10.1103/PhysRevB.77.073408
We show that adsorbates on surfaces can form islands even if there are no attractive interactions. Instead strong repulsion between adsorbates at short distances can lead to islands, because such islands increase the entropy of the adsorbates that are not part of the islands. We suggest that this mechanism cause the observed island formation in O/Pt(111), but it may be important for many other systems as well.
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