Visualizing Current in Superconducting Networks

<p>We present an experimental study of local magnetic imaging in order to visualize the current flow in<br> superconducting networks. We track the evolution of the spatial distribution of the current flow as the<br> network is driven from fully superconducting to fully normal phases. Our results highlight the factors<br> that contribute to the disordered flow in superconducting networks during their collapse, and demonstrate<br> that the current is never uniformly distributed in the network. These results can assist the design and<br> development of circuits based on superconductors and Josephson junctions.</p>