Berlin 2005 – wissenschaftliches Programm
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M: Metallphysik
M 6: Symposium Complex Metallic Alloys I
M 6.4: Vortrag
Freitag, 4. März 2005, 11:45–12:00, TU H1058
Surface physics, chemistry and nanoscience of complex metallic alloys — •Ronan McGrath1, Marie-Genieviève Barthés-Labrousse2, Karsten Horn3, and Guy Tréglia4 — 1Dept. of Physics, the University of Liverpool, UK — 2CNRS Vitry, France — 3Fritz-Haber Institute, Berlin, Germany — 4CNRS Marseilles, France
The surface physics, chemistry and nanoscience of complex metallic alloys (CMAs) presents many new challenges. For many existing experimental and theoretical techniques, the investigation of the large unit cell periodic alloys are on the borderline of what is feasible, especially with quantitative structural probes. It seems likely that many of the modifications of these techniques developed for the study of the aperiodic quasicrystal surfaces will be useful for these materials. The scientific study of these materials will break new ground, and the work will focus on three areas. The first is the understanding of the clean surface structure and properties of representative CMAs. Here there is especial interest in the study of the electronic structure close to the Fermi edge to compare with studies on related simple metal and quasicrystal phases. The second area is the investigation of the use of these surfaces as templates for the formation of low dimensional nanostructures, i.e. quantum dots and ultra-thin films. and of particular interest is how the cluster sub-structure will influence growth mechanisms for these materials. The third area of interest is the investigation of the properties of these materials in ambient environments. The results of these studies will form a crucial input to the design of potential devices based on CMAs.