Flux pinning properties of superconductors with an array of blind holes

Abstract

We performed ac-susceptibility measurements to explore the vortex dynamics and the flux pinning properties of superconducting Pb films with an array of micro-holes (antidots) and non-fully perforated holes (blind holes). A lower ac-shielding together with a smaller extension of the linear regime for the lattice of blind holes indicates that these centers provide a weaker pinning potential than antidots. Moreover, we found that the maximum number of flux quanta trapped by a pinning site, i.e. the saturation number ns, is lower for the blind hole array.

6 figures, 6 pages

References in corpus (3)

• Field-dependent Vortex Pinning Strength in a Periodic Array of Antidots
• Deformation and Depinning of Superconducting Vortices from Artificial Defects: A Ginzburg-Landau Study
• Dynamic Regimes in Films with a Periodic Array of Antidots

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