Realization of the $\pi$-state in junctions formed by multi-band superconductors with a spin-density-wave

Andreas Moor, Anatoly F. Volkov, Konstantin B. Efetov

Using a simple model of multi-band superconductors, which can be applied in particular to Fe\nobreakdash-based pnictides, we calculate the Josephson current $I_{\text{J}}$ in a tun…