De-localized states in three-terminal InSb nanowire devices

ORAL

Abstract

Majorana bound states(MBS) has been predicted to emerge in 1D nanowire with induced superconductivity, spin-orbital coupling and external magnetic field. Although zero bias peak(ZBP) has been observed in different systems for years, no tunneling spectroscopy has verified the existence of the two Majorana bound states that should appear at the boundaries of the topological regime. We fabricated three-terminal devices with 400nm long superconducting contact in the middle and de-localized states have been observed from two sides measured simultaneously. On the contrary of the regime where the ZBP usually be observed in two terminal devices, those de-localized states appear in more open regime with more subbands available. Ongoing measurements will be dedicated to answer whether ZBP could appear in that regime and be observed from two sides.

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Presenters

  • Peng Yu

    University of Pittsburgh

Authors

  • Peng Yu

    University of Pittsburgh

  • Jun Chen

    University of Pittsburgh

  • Moira Hocevar

    Institut NEEL CNRS, Institut Néel CNRS

  • Ghada Badawy

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

  • 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

  • Roy Op het Veld

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

  • Sébastien Plissard

    LAAS CNRS, LAAS Toulouse

  • 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