Regensburg 2013 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 27: Superconductivity: Fe-based Superconductors - 122
TT 27.13: Talk
Tuesday, March 12, 2013, 13:00–13:15, H18
Investigations of pnictide superconductors - three Josephson junction aproaches — •Stefan Schmidt1, Sebastian Döring1, Martin Feltz1, Noor Ali Hasan1, Sandra Gottwals1, Frank Schmidl1, Silvia Haindl2, Kazumasa Iida3, Fritz Kurth3, Bernhard Holzapfel3, and Paul Seidel1 — 1Institut für Festkörperphysik, Friedrich-Schiller-Universität Jena, Helmholtzweg 5, 07743 Jena, Germany — 2IFW Dresden, Institute for Solid State Research, Helmholtzstrasse 20, 01069 Dresden, Germany — 3IFW Dresden, Institute for Metallic Materials, Helmholtzstrasse 20, 01069 Dresden, Germany
The investigation of fundamental electrical properties in iron pnictide superconductors has to be pursued in order to realize devices and applications in the future. Particularly, Josephson junctions are a very important tool to examine device-oriented interface effects in hybrid and all-pnictide contacts. We present results on different junction geometries based on thin film technology using Co-doped Ba-122 as base electrode. Planar SNS’ junctions that favor transport along the c-axis are compared to edge-type (hybrid) and grain boundary junctions (all-pnictide) where charge carriers are transported within the ab-plane of the superconductor.
This work was partially supported by the EU within IRON-SEA (project no. FP7-283141), DFG within SPP 1458 (projects SE 664/15-1 and HA 5934/1-1), the DAAD, and the Landesgraduiertenförderung Thüringen.
S. Schmidt et al., IEEE-TAS (accepted, 2012), arXiv.org: 1211.3879