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DPG

Regensburg 2007 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 15: Superconductivity - Tunneling, Josephson Junctions, SQUIDs

TT 15.4: Talk

Tuesday, March 27, 2007, 14:45–15:00, H20

Coupling of external electromagnetic fields to supercurrents: From SQUID to SQIF — •Nils Schopohl — Eberhard-Karls-Universitaet Tuebingen, Institut fuer Theoretische Physik, Lehrstuhl Theoretische Festkoerperphysik, Auf der Morgenstelle 14, D-72076 Tuebingen

Basic principles of Josephson junction based interferometers are reviewed. Key features of parallel and also serial Superconducting Quantum Interference Filters (SQIFs) are explained in detail. Results of recent mixing experiments with radiofrequency signals between 100 MHZ and 20GHz are discussed and analyzed with help of a simple model.

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