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Doppler shift in Andreev reflection from a moving superconducting condensate in Nb/InAs Josephson junctions

URN to cite this document:
urn:nbn:de:bvb:355-epub-79786
Rohlfing, Franziska ; Tkachov, Grygoriy ; Otto, Florian ; Richter, Klaus ; Weiss, Dieter ; Borghs, G. ; Strunk, Christoph
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PDF - Accepted Version
arXiv PDF (22.10.2009)
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arXiv PDF (02.03.2009)
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Date of publication of this fulltext: 05 Aug 2009 13:58



Abstract

We study narrow ballistic Josephson weak links in an InAs quantum well contacted by Nb electrodes. Measurements of the conductance, excess and critical currents reveal a dramatic magnetic-field suppression of the Andreev reflection amplitude, which occurs even for in-plane field orientation with essentially no magnetic flux through the junction. Our observations demonstrate the presence of an ...

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