Berlin 2008 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 15: Superconductivity: Poster Session
TT 15.33: Poster
Dienstag, 26. Februar 2008, 14:00–18:00, Poster B
Development of Josephson junctions with ferromagnetic barrier — •Dirk Sprungmann, Kurt Westerholt, and Hartmut Zabel — Ruhr-Universität Bochum Experimentalphysik IV, 44780 Bochum, Germany
π-coupled Josephson junctions with ferromagnetic interlayers enjoy an increasing interest in the spin electronic community since they are considered as candidates to be used for quantum bits. In order to investigate π-coupled Josephson junctions it is initially necessary to find a sample design which allows to produce reproducibly high quality Josephson junctions with a low or negligible sub-gap leakage.
On our poster we present a sample design with a minimized number of process steps, which allows us to produce a complete sample within six hours. We describe the optimization of the different process steps in the preparation of the SIFS-type junctions, where I and F denote an Al2O3 and a ferromagnetic layer respectively.
We acknowledge financial support through SFB 491