Dresden 2006 – wissenschaftliches Programm
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O: Oberflächenphysik
O 29: Poster session II (Nanostructures, Magnetism, Particles and clusters, Scanning probe techniques, Time-resolved spectroscopy, Structure and dynamics, Semiconductor surfaces and interfaces, Oxides and insulators, Solid-liquid interfaces)
O 29.11: Poster
Mittwoch, 29. März 2006, 14:30–17:30, P2
Angle-resolved photoelectron spectroscopy on self-assembled dysprosium-silicide nanowires on vicinal Si(001) — •Sylvia Hagedorn1, Martina Wanke1, Gerd Pruskil1, Mario Dähne1, Denis Vyalikh2, Friedrich Schiller2, Sergeij Molodtsov2, and Clemens Laubschat2 — 1Institut für Festkörperphysik, Technische Universität Berlin, D-10623 Berlin — 2Institut für Festkörperphysik, Technische Universität Dresden, D-01219 Dresden
Rare-earth silicide nanowires attract considerable interest due to their simple preparation and their anisotropic electronic properties. We report on angle-resolved photoelectron spectroscopy investigations of the electronic structure of dysprosium-silicide nanowires on vicinal Si(001) surfaces at BESSY II. Two types of nanowires are found depending on the specific preparation conditions. Different electronic properties of these nanowires depending on the wiretype will be presented. In nanowire direction strongly dispersing bands are found crossing the Fermi energy, while also a slight dispersion in perpendicular direction will be discussed in detail. Hence dysprosium-silicide nanowires could be interesting for contacting devices in future nanocircuit technologies.
This project was supported by DFG, project number DA 408/11.