Dresden 2017 – wissenschaftliches Programm
TT 53.15: Poster
Mittwoch, 22. März 2017, 15:00–19:00, P2-OG2
High field properties of superconducting Ba(Fe1−xNix)2As2 thin films — •Stefan Richter1,2, Fritz Kurth1, Kazumasa Iida3, Kirill Pervakov4, Aurimas Pukenas2, Saicharan Aswartham1, Chiara Tarantini5, Jan Jaroszynski5, Jens Hänisch6, Vadim Grinenko1,2, Sabine Wurmehl1, Werner Skrotzki2, Bernd Büchner1,2, Kornelius Nielsch1,2, and Ruben Hühne1 — 1IFW, Dresden — 2TU Dresden — 3Nagoya University, Japan — 4RAS, Moscow, Russia — 5NHMFL, Tallahassee, USA — 6KIT, Karlsruhe
The Fe based superconductors show great potential for high field applications due to their high upper critical field, their small anisotropy and their increased tolerance to small angle grain boundaries. The study of Fe-based superconducting thin films contributes to a better understanding of these correlated electron systems. We present results for epitaxial Ba(Fe1−xNix)2As2 thin films, which have been grown with pulsed laser deposition. The behavior of the upper critical field and critical current density has been measured in high magnetic fields up to 35 T. We find an increased slope of the upper critical field near Tc and compared to Co-doped thin films a smaller vortex liquid phase at low temperatures.