Gate-tunable superconductivity in hybrid InSb-Pb nanowires
Yan Chen (University of Copenhagen)
David van Driel (TU Delft - QuTech Advanced Research Centre, TU Delft - QRD/Kouwenhoven Lab, Kavli institute of nanoscience Delft)
Charalampos Lampadaris (University of Copenhagen)
Sabbir A. Khan (Danish Fundamental Metrology, Horsholm, University of Copenhagen)
Khalifah Alattallah (University of Copenhagen)
Lunjie Zeng (Chalmers University of Technology)
Eva Olsson (Chalmers University of Technology)
Tom Dvir (TU Delft - Qubit Research Division, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)
Peter Krogstrup (University of Copenhagen)
Yu Liu (University of Copenhagen)
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Abstract
We present a report on hybrid InSb-Pb nanowires that combine high spin-orbit coupling with a high critical field and a large superconducting gap. Material characterization indicates the Pb layer of high crystal quality on the nanowire side facets. Hard induced superconducting gaps and gate-tunable supercurrent are observed in the hybrid nanowires. These results showcase the promising potential of this material combination for a diverse range of applications in hybrid quantum transport devices.