Experimental evaluation demonstrates functional Josephson tunneling in Y-Ba-Cu-O/AlOx/Nb junctions at 4.2 K, highlighting feasibility for high-temperature superconducting electronics.
We have fabricated Y-Ba-Cu-O/AlO x /Nb Josephson tunnel junctions using electron-beam evaporation of Al and Nb films and natural oxidation. Superconducting Josephson current, hysteresis, and rf-induced voltage steps at a voltage greater than 0.4 mV have been clearly observed at 4.2 K. Moreover, rf-induced subharmonic steps have appeared. Magnetic field dependence of the superconducting Josephson current has also been studied.
No takes yet. Share an insight, caveat, or question.
Nakayama et al. (1987) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: