Anomalous Magnetic Field Dependence in Nanowire Josephson Junctions

ORAL

Abstract

Commonly, the magnetic field dependence of nanowire based Josephson junctions shows a monotonical suppression of the critical supercurrent. However, an anomalous supercurrent enhancement by magnetic field has been observed in different nanowire Josephson junctions and has been attributed to various mechanisms. Here, we present a similar observation in Ge-Si core-shell nanowire Josephson junctions and show that the interplay between the pair-breaking effect and the thermalization effect is more likely a general cause of such phenomenon.

*The TOPSQUAD project has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement #862046

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Presenters

  • Zhen Wu

    • University of Twente

Authors

  • Zhen Wu

    • University of Twente

  • Joost Ridderbos

    • University of Twente

  • Alexandre A Golubov

    • University of Twente

  • Chuan Li

    • University of Twente

  • Ang Li

    • Eindhoven University of Technology

  • Erik P. A. M. Bakkers

    • Eindhoven University of Technology

  • Alexander Brinkman

    • University of Twente
    • U Twente

  • Floris Zwanenburg

    • Univ of Twente