0–π transition induced by the barrier strength in spin superconductor Josephson junctions*

Project supported by the National Key R&D Program of China (Grant No. 2017YFA0303203) and the National Natural Science Foundation of China (Grant No. 11474149).

Zeng Wen1, Shen Rui1, 2, †
       

(color online) (a) Free energy as a function of φ at T = 0.2Tc, where Tc is the superconducting critical temperature. The red solid line and the purple dash-dotted line are for z = 0.3 and z = 4, respectively. The blue dashed line and the orange dotted line are for z = 1.5 and z = 1.7, respectively. (b) Free energy as a function of z. The red solid line and the blue dashed line are for φ = 0 and φ = π, respectively.