Magnetic-field dependence of the critical currents in a periodic coplanar array of narrow superconducting strips

Abstract

Abstract. We calculate the magnetic-field dependence of the critical current due to both geometrical edge barriers and bulk pinning in a periodic coplanar array of narrow superconducting strips. We find that in zero or low applied magnetic fields the critical current can be considerably enhanced by the edge barriers, but in modest applied magnetic fields the critical current reduces to that due to bulk pinning alone.

The effect of resistive filament interconnections on coupling losses in filamentary YBa2Cu3O7coated conductors

“…with J c0 = 2.4 × 10 4 A m −1 and B 0 = 0.125 T, where B is the externally applied field and J c0 the sheet critical current at B = 0. Edge pinning causing a strong increase of J c with decreasing field [11] was not observed, due to the relatively large filament width. Critical currents of the individual filaments are different due to the non-uniformity of the original, unstriated tape [12].…”