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Demonstration of a superconducting diode-with-memory, operational at zero magnetic field with switchable nonreciprocity

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  • Taras Golod

    (Stockholm University, AlbaNova University Center)

  • Vladimir M. Krasnov

    (Stockholm University, AlbaNova University Center)

Abstract

Diode is one of the basic electronic components. It has a nonreciprocal current response, associated with a broken space/time reversal symmetry. Here we demonstrate prototypes of superconducting diodes operational at zero magnetic field. They are based on conventional niobium planar Josephson junctions, in which space/time symmetry is broken by a combination of self-field effect from nonuniform bias and stray fields from a trapped Abrikosov vortex. We demonstrate that nonreciprocity of critical current in such diodes can reach an order of magnitude and rectification efficiency can exceed 70%. Furthermore, we can easily change the diode polarity and switch nonreciprocity on/off by changing the bias configuration and by trapping/removing of a vortex. This facilitates a memory functionality. We argue that such a diode-with-memory can be used for a future generation of in-memory superconducting computers.

Suggested Citation

  • Taras Golod & Vladimir M. Krasnov, 2022. "Demonstration of a superconducting diode-with-memory, operational at zero magnetic field with switchable nonreciprocity," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-31256-w
    DOI: 10.1038/s41467-022-31256-w
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