  The paradigm of interdependent networks has recently been manifested in
experimentally testable lab setup of interdependent superconducting networks.
This system experiences an abrupt transition due to the thermal dissipation
between the networks but its underlying mechanism remains elusive. Here we
study the critical behavior and the underlying mechanism of the transition,
unveiling its unique microscopic nature. The microscopic characteristics of the
transition result in a macroscopic long-living plateau that lasts for thousands
of seconds and increases with the size of the system. We characterize the
critical behavior of the transition and find that the critical exponents are
consistent with those predicted theoretically for percolation of abstract
interdependent networks and interdependent ferromagnetic networks, supporting a
common universal origin of interdependent systems.
