Dresden 2009 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 27: Poster Session I (Methods: Scanning probe techniques; Methods: Atomic and electronic structure; Methods: Molecular simulations and statistical mechanics; Oxides and Insulators: Clean surfaces; Oxides and Insulators: Adsorption; Oxides and Insulators: Epitaxy and growth; Semiconductor substrates: Clean surfaces; Semiconductor substrates: Epitaxy and growth; Semiconductor substrates: Adsorption; Nano- optics of metallic and semiconducting nanostructures; Electronic structure; Methods: Electronic structure theory; Methods: other (experimental); Methods: other (theory); Solutions on surfaces; Epitaxial Graphene; Surface oder interface magnetism; Phase transitions; Time-resolved spectroscopies)
O 27.79: Poster
Dienstag, 24. März 2009, 18:30–21:00, P2
Spectroscopy of superconducting V3Si(001) in tunneling and contact regime — Nadine Hauptmann, •Michael Becker, Jörg Kröger, and Richard Berndt — Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany
The energy gap of the superconductor V3Si is monitored on a yet unknown surface reconstruction most likely induced by carbon. Depending on the surface position spectroscopy reveals an asymmetric energy gap. The evolution of the energy gap with decreasing tip-sample distance from the tunneling to the contact regime indicates Andreev reflections in contact spectroscopy. Financial support by the DFG is gratefully acknowledged.