Suppression of Josephson currents in ballistic junctions by an injection current

Golubov, A.A. and Neurohr, K. and Schäpers, Th. and Lüth, H. and Behet, M. (1999) Suppression of Josephson currents in ballistic junctions by an injection current. Superlattices and Microstructures, 25 (5-6). pp. 1033-1040. ISSN 0749-6036

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Abstract:	Control of the critical current in a superconductor/two-dimensional electron gas Josephson junction by means of an injection current is reported. The control mechanism is explained by a theoretical model, which takes ballistic transport across the junction and diffusive transport through the semiconductor wire structure into account. Measurements on a Nb-AlGaSb/InAs-Nb junction show that the strong suppression of the critical current can, in principle, be explained by the theoretical model. Deviations are due to the nonlinear current–voltage characteristics of the superconductor/two-dimensional electron gas interface and the two-dimensionality of the supercurrent transport.
Item Type:	Article
Copyright:	© 1999 Elsevier
Faculty:	Science and Technology (TNW)
Research Group:	Low Temperatures - Biomagnetism (LT)
Link to this item:	http://purl.utwente.nl/publications/74190
Official URL:	http://dx.doi.org/10.1006/spmi.1999.0715
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