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Flux pinning properties of superconductors with an array of blind holes

S. Raedts·A. V. Silhanek·M. J. Van Bael·V. V. Moshchalkov
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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.

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S. Raedts, A. V. Silhanek, M. J. Van Bael, V. V. Moshchalkov. 2004-03-22. Flux pinning properties of superconductors with an array of blind holes. https://doi.org/10.1103/physrevb.70.024509

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