Superconductor Device for Operation in an External Magnetic Field

A superconductor device for operation in an external alternating magnetic field, the device comprising:

• two superconducting contact elements;
• a current-conducting section connecting the two contact elements in a longitudinal direction corresponding to the direction of the flow of current from one contact element to the other contact element;
• a superconductor layer applied to a substrate, the superconductor layer at least partly severed in the longitudinal direction by a recess defining individual filaments;
• wherein the individual filaments define current paths for the transport current;
• wherein at least two adjacent filaments are conductively connected in a crossing region formed on the substrate;
• wherein the crossing region connects four current paths through omission of the recess;
• at least one ohmic resistance barrier in current paths of the at least two adjacent filaments, which current paths are opposite with respect to the crossing and offset in the longitudinal direction and a transverse direction, perpendicular to the longitudinal direction, of a plane of the layer.