Abstract
We study the effect of magnetic fields on the resistance $R$ of a superconducting La${}_{1.84}$Sr${}_{0.16}$CuO${}_{4}$ film patterned into a ``double'' network comprising nanosized square loops having their vertexes linked by relatively long wires. The results are compared with those obtained in a regular network of square loops of the same size. Both networks exhibit periodic dependence of $R$ on the ratio $\ensuremath{\Phi}/{\ensuremath{\Phi}}_{0}$ between the flux penetrating a loop and the superconducting flux quantum. However, while the regular network exhibit features characteristics of collective behavior of the loops, the double network exhibits a single-loop behavior. This observation indicates uncorrelated arrangements of fluxoids in the double network, in agreement with a recent theoretical prediction.
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