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

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.

SUBMITTER: Golod T

PROVIDER: S-EPMC9237109 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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

Golod Taras T Krasnov Vladimir M VM

Nature communications 20220627 1

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 ...[more]

PMID: 35760801

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