Figure 4
Current-phase relations (CPR) for (a) long and (b) short junctions.
The red open circles show the numerically calculated supercurrent density for the lowest energy state. The blue dash lines plot 
in (a) and 
in (b). The black dash lines plot the complementary soltion (CS) of 
in (a) and 
in (b). For ϕ0 < π the red circles fall on top of the blue line; the numerical calculation is consistent with the DS from our simple pictures in both the short- and the long- junction limits. For 
, the lowest energy states turn into the CS. A jump occurs at 
if the system can quickly relax to the lowest energy state.
