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