Local suppression of Josephson currents in niobium/two-dimensional electron gas/niobium structures by an injection current

K. Neurohr; Th. Schäpers; J. Malindretos; S. Lachenmann; A. I. Braginski; H. Lüth; M. Behet; G. Borghs; A. A. Golubov

doi:10.1103/PhysRevB.59.11197

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Local suppression of Josephson currents in niobium/two-dimensional electron gas/niobium structures by an injection current

K. Neurohr, Th. Schäpers, J. Malindretos, S. Lachenmann, A. I. Braginski, H. Lüth, M. Behet, G. Borghs, A. A. Golubov

DOI 10.1103/PhysRevB.59.11197 · Physical Review B

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Abstract

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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	6.5	Pressure not reported	unknown