Quasireentrant superconducting transition in metastable states of a Zn-Sb alloy
Gantmakher V. F., Zverev V. N., Teplinskii V. M., Barkalov O. I.
A quasireentrant superconducting transition in high-resistance states of a Zn-Sb alloy has been studied as a function of the transport current. The current-voltage characteristics of the test sample have voltage steps and a hysteresis. The maximum Josephson current decreases with decreasing temperature. There is a crossover from a Josephson characteristic to a tunneling characteristic when this current is exceeded.