Current states in symmetrical SNINS junction for arbitrary concentrations of nonmagnetic impurities

Current-phase relation in layered superconducting structures of SIS’IS type

“…However, for the temperature close to the critical, such a reduced model cannot be used. In this region of temperature, the spatial nonhomogeneity of the order parameter near IS interface must be taken into account [19,20].…”

The effect of an external magnetic field on the maximum current of SNINS junctions near the critical temperature

“…For practical reasons, we take the vector potential oriented as follows: ì A = (0, −zH, 0). In work [31], where the current states in the superconducting SNINS junction near the critical temperature were investigated, it was shown that for certain values of junction parameters, the current-phase relation is different from the traditional sinusoidal dependence. A pronounced anharmonicity of the current is caused by the depairing effects action which are significant at small values of the normal metal thickness and non-small values of the electron transmission coefficient.…”

“…metal thickness and the length of electron free path affect the dependence of the maximum current in the junction on the magnetic flux. The result for the current-phase relation in SNINS junction is given by [31]…”

“…In the above expressions, the notations for integrals which are determined by the kernels of linear integral equations for the order parameter were used (see [31]).…”