Effect of a finite transmission of the insulating layer on the properties of SIS tunnel junctions
Kupriyanov M. Yu.
The effect of a depairing in the superconducting electrodes of an SIS tunnel junction on the steady-state properties of this junction is studied. A suppression of the superconductivity of the electrodes by a current results in substantial changes in the functional dependence Is(cp) and in the temperature dependence of the critical current Ic at a junction resistance i?rt<p£*. It is concluded that the suppression of the product IJR.n in the Josephson junctions at the grain boundaries in high-rc superconductors is not a consequence of a depairing in the grains themselves.