Superfluid/ferromagnet/superfluid-junction and $\pi$-phase in a superfluid Fermi gas at finite temperatures

Takashi Kashimura, Shunji Tsuchiya, Yoji Ohashi

We investigate the stability of $\pi$-phase in a polarized superfluid Fermi gas ($N_{\uparrow }>N_{\downarrow }$, where $N_{\sigma }$ is the number of atoms in the hyperfine state described by pse…