Dresden 2006 – wissenschaftliches Programm
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TT: Tiefe Temperaturen
TT 7: Superconductivity & Solids At Low Temperature - Poster Session
TT 7.44: Poster
Montag, 27. März 2006, 14:00–17:45, P1
Magnetotransport in Lateral S/F/S Junctions — •Wilfried Meindl1, Marco Aprili2,3, and Christoph Strunk1 — 1Institut für Experimentelle und Angewandte Physik, Universität Regensburg, Germany — 2CSNSM-CNRS, Université Paris Sud, Orsay, France — 3LPQ-ESPCI, 75005 Paris, France
The antagonism of superconductivity and magnetism is investigated by fabricating lateral superconductor/ferromagnet/superconductor junctions. Niobium strips connected by a bridge of the dilute ferromagnet PdFe were produced using shadow evaporation techniques. The length of the bridge varied between 200 and 600 nm and the Fe-concentration was 5 %. Measurements of the resistance as a function of an in-plane magnetic field show periodic oscillations, whose amplitude can reach up to 10% of the base resistance, and a hysteretic dip around zero. The oscillations appear close to the superconducting transition and vanish again at lower temperatures. The dip is associated with the magnetization reversal in PdFe.