Saturday, March 17, 2018

quantum mechanics - What does the $I$-$V$ curve in josephson junction mean?


According to the $I$-$V$ curve for Josephson junction tunneling for S-I-S (superconductor-insulator-superconductor),


enter image description here



Do we have any tunneling current for $0< V\leq V_c$? If yes, then why don't we show it in the diagram? If no, why don't we have a tunneling current in this voltage interval?




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