Local suppression of Josephson currents in niobium/two-dimensional electron gas/niobium structures by an injection current
Neurohr, K Schapers, T Malindretos, J Lachenmann, S Braginski, AI Luth, H Behet, M Borghs, Gustaaf Golubov, AA #
American physical soc
Physical Review B vol:59 issue:17 pages:11197-11200
We investigated niobium-AlGaSb/InAs-niobium hybrid structures using a high mobility two-dimensional electron gas as a weak link. The Josephson current observed in this structure was suppressed by an injection current driven into the weak link via an additional normal lead. Using a four-terminal configuration the supercurrent is suppressed all over the weak link. In a three-terminal configuration it was possible to suppress the supercurrent locally. [S0163-1829(99)06217-7].