Berlin 2005 – wissenschaftliches Programm
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O: Oberflächenphysik
O 12: Nanostrukturen I
O 12.4: Vortrag
Freitag, 4. März 2005, 16:30–16:45, TU EB202
Long range order of 2D C60 islands on Au(788) — •Nicolas Neel, Jörg Kröger, and Richard Berndt — Institut für Experimentelle und Angewandte Physik Universität Kiel
Submonolayer coverages of C60 on Au(788) were investigated by low-temperature scanning tunnelling microscopy. At 0.5 ML coverage self-organized two-dimensional C60 islands occur and form well ordered rectangular arrays which extend over distances of hundreds of nanometres. Judging by a large number of images recorded througout the crystal surface we estimate that the arrays cover more than 95 percent of the total area. The formation of the periodic array and observed homogeneity of the island shape are discussed within a model which involves initial nucleation of C60 at step edges and preferential adsorption on FCC domains of the gold surface. This adsorption system appears to be a useful template for further deposition of functional units.