Anderson—Dayem bridge

We will describe two different types of Josephson junctions (i) The Anderson-Dayem bridges, the behavior of which can be interpreted very nicely in terms of dissipative structures, but for which the theoretical description is not so simple. 

Figure 7. Current-voltage characteristic for an Anderson-Dayem bridge...

In the time independent case the array is stationary and does not dissipate any energy in the time dependent case it moves along the barrier with an arbitrary velocity < V. The moving array of vortices appears, as in the Anderson-Dayem bridges, when the current through the junction exceeds a certain critical current 1. In that case the system is in a dissipative structure state. 

We can make the same conclusions as in the case of Anderson-Dayem bridges. Away from equilibrium an array of vortices appears which moves along the barrier. No energy dissipation is needed to keep the vortices alive, the proof being that similar arrays (the stationary arrays) can be produced at equilibrium. 

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