Flux pinning properties of superconductors with an array of blind holes

Details Flux pinning properties of superconductors with an array of blind holes Flux pinning properties of superconductors with an array of blind holes

2004-03-22

arxiv.org/abs/cond-mat/0403550v1

Physical Review B 70, 024509 (2004)

Physics

Condensed Matter

Superconductivity

6 figures, 6 pages

Scientific paper

10.1103/PhysRevB.70.024509

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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