Electronic structure of semiconductor/superconductor interfaces from angle-resolved photoemission experiments

ORAL

Abstract

Hybrid epitaxial semiconductor/superconductor heterostructures have recently shown promise as a platform to realize Majorana zero modes. To pave the way towards the engineering of such heterostructures for quantum information applications, it is imperative to obtain information about their electronic properties at the semiconductor/superconductor interface. Here, we report on recent soft X-ray angle-resolved photoemission experiments to obtain key electronic material parameters for III-V semiconductor/aluminium interfaces, such as effective mass, charge density, and band offset.

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Presenters

  • Niels Schröter

    • University of Oxford
    • Swiss Light Source, Paul Scherrer Institut
    • Paul Scherrer Institute
    • Paul Scherrer Institut, Swiss Light Source

Authors

  • Sergej Schuwalow

    • Center For Quantum Devices and Microsoft Quantum Materials Lab - Copenhagen, Niels Bohr Institute, University of Copenhagen

  • Niels Schröter

    • University of Oxford
    • Swiss Light Source, Paul Scherrer Institut
    • Paul Scherrer Institute
    • Paul Scherrer Institut, Swiss Light Source

  • Candice Thomas

    • Department of Physics and Astronomy and Station Q Purdue, Purdue University
    • Department of Physics and Astronomy, Purdue University
    • Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907 USA
    • Department of Physics and Astronomy and Station Q Purdue, Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA
    • Department of Physics and Astronomy, Station Q Purdue, and Birck Nanotechnology Center, Purdue University

  • Alla Chikina

    • Swiss Light Source, Paul Scherrer Institut
    • Paul Scherrer Institute

  • Marco Caputo

    • Paul Scherrer Institute

  • Jonas Krieger

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut
    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Paul Scherrer Institute

  • Geoffrey Gardner

    • Department of Physics and Astronomy, Purdue University
    • Purdue University
    • Birck Nano Technology Center, Purdue University
    • Dept. of Physics, Purdue University
    • Department of Physics and Astronomy and Station Q Purdue, Purdue University
    • Department of Physics and Astronomy, Station Q Purdue, and Birck Nanotechnology Center, Purdue University

  • Vladimir Strocov

    • Swiss Light Source, Paul Scherrer Institut
    • Paul Scherrer Institute

  • Gabriel Aeppli

    • Paul Scherrer Institude
    • Paul Scherrer Institute

  • Matthias Troyer

    • Microsoft Corporation Redmond, WA
    • Microsoft
    • ETH Zurich
    • Microsoft Quantum

  • Michael Manfra

    • Purdue University
    • Microsoft
    • Department of Physics and Astronomy and Station Q Purdue, Purdue University
    • Department of Physics and Astronomy, Purdue University
    • Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907 USA
    • Microsoft Station Q Purdue
    • Physics and Astronomy, Purdue University
    • Department of Physics and Astronomy, School of Materials Engineering and School of Electrical and Computer Engineering, Purdue University
    • Station Q Purdue and Department of Physics and Astronomy, Purdue University
    • Dept. of Physics, Purdue University
    • Department of Physics and Astronomy and Station Q Purdue, Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA
    • Dept. of Physics and Astronomy, Purdue
    • Purdue University, Station Q Purdue
    • Department of Physics and Astronomy, Station Q Purdue, and Birck Nanotechnology Center, Purdue University

  • Peter Krogstrup

    • Center for Quantum Devices and Microsoft Quantum Lab–Copenhagen, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark
    • Station Q Lyngby, Microsoft
    • Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen
    • Center For Quantum Devices and Microsoft Quantum Materials Lab - Copenhagen, Niels Bohr Institute, University of Copenhagen