Demonstration of a current-controlled three-terminal Nb–InxGa1−xAs/InP Josephson contact

The supercurrent in a Nb–In0.53Ga0.47As/In0.77Ga0.23As/InP weak link structure is controlled by means of a current injected into the two-dimensional electron gas. For small injection currents the critical current to control current ratio is as large as 20. The measured features can be qualitively ex...

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Bibliographic Details
Published in:Applied physics letters 1998-10, Vol.73 (16), p.2348-2350
Main Authors: Schäpers, Th, Malindretos, J., Neurohr, K., Lachenmann, S., van der Hart, A., Crecelius, G., Hardtdegen, H., Lüth, H., Golubov, A. A.
Format: Article
Language:English
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Summary:The supercurrent in a Nb–In0.53Ga0.47As/In0.77Ga0.23As/InP weak link structure is controlled by means of a current injected into the two-dimensional electron gas. For small injection currents the critical current to control current ratio is as large as 20. The measured features can be qualitively explained in terms of a modification of the Andreev level occupation by the injected carriers.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.122457