Nonlinear electric effects at superconductor-normal metal contacts
Gubankov V.N., Margolin N.M.
The gap singularities, excess current and nonmonotonic temperature dependence of the first derivative of the I-V characteristic of the superconductor-normal metal microcontact with direct conductivity, which is associated with the variation of the conductivity mechanism as a result of decreasing the temperature, were observed experimentally.