Supercurrent in InSb Quantum Point Contacts

ORAL

Abstract

We study superconductivity induced by NbTiN in InSb nanowires. We observe supercurrents of the regime of a single occupied subband and study their magnetic field evolution. In the multimode regime where multiple one-dimensional subbands are occupied, supercurrent interference due to magnetic field has been reported. It is predicted that in the limit of a single occupied subband interference is suppressed and supercurrents can be observed to high magnetic fields, allowing the study of spin-orbit and Zeeman effects on the Josephson effect.

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Presenters

  • Bomin Zhang

    • Physics, Univ of Pittsburgh

Authors

  • Bomin Zhang

    • Physics, Univ of Pittsburgh

  • Hao Wu

    • Department of Physics and Astronomy, University of Pittsburgh
    • University of Pittsburgh
    • Physics, Univ of Pittsburgh

  • Sasa Gazibegovic

    • Applied Physics, Eindhoven University of Technology
    • Eindhoven University of Technology
    • Applied Physics, Eindhoven Univ. of Technology
    • Department of Applied Physics, Eindhoven University of Technology
    • TU Eindhoven
    • Eindhoven University of Technology, Department of Applied Physics

  • Ghada Badawy

    • Applied Physics, Eindhoven University of Technology
    • Eindhoven University of Technology
    • Applied Physics, Eindhoven Univ. of Technology

  • Roy Op het Veld

    • Applied Physics, Eindhoven University of Technology
    • Eindhoven University of Technology
    • Applied Physics, Eindhoven Univ. of Technology

  • Erik P. A. M. Bakkers

    • Applied Physics, Eindhoven University of Technology
    • Eindhoven University of Technology
    • Applied Physics, Eindhoven Univ. of Technology
    • Department of Applied Physics, Eindhoven University of Technology
    • TU Eindhoven
    • Eindhoven University of Technology, Department of Applied Physics
    • Physics, TU Eindhoven

  • Sergey M Frolov

    • University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics, Univ of Pittsburgh