The magnetoresistance, critical currents, and voltage-current (V-I) characteristics have been studied in superconducting a-WGe films with a square lattice of cylindrical microholes (antidots). Besides a strong enhancement of the critical current caused by matching of the flux lines with the antidot lattice having a period d, two different dissipative regimes have been observed giving rise to a crossover in the [log(V)-log(I)] characteristics for magnetic fields above the first matching field B₁=B_φ≡Φ₀d^-2. This V-I behavior is caused by the coexistence of a weakly pinned interstitial vortex fluid and a strongly pinned vortex lattice at the antidots.
No takes yet. Share an insight, caveat, or question.
Rosseel et al. (1996) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: