Physics – Condensed Matter – Superconductivity
Scientific paper
2012-01-23
Appl. Phys. Lett. 100, 122602 (2012)
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1063/1.3696888
A low and almost temperature independent resistance in the normal state and an anomalous peak effect within the normal-superconducting transition have been observed in BaFe$_{1.8}$Co$_{0.2}$As$_2$/Fe bilayers, prepared on IBAD-MgO/Y$_2$O$_3$ buffered technical substrates. A resistor network array sufficiently reproduces this effect, assuming an increase of the electrical conductance between tape and film with decreasing buffer layer thickness. Based on this model we evaluated the influence of this effect on the critical current density and successfully reconstructed the superconducting transition of the bilayer.
Haindl Silvia
Hänisch Jens
Holzapfel Bernhard
Hühne Ruben
Iida Kazumasa
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