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Symmetry Constraints on Direct-Current Josephson Diodes

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arxiv 2209.12646 v1 pith:L5P2RFJQ submitted 2022-09-26 cond-mat.supr-con cond-mat.mes-hall

Da Wang , Qiang-Hua Wang , Congjun Wu This is my paper · ORCID
classification cond-mat.supr-concond-mat.mes-hall
keywords diodejosephsoneffectexhibitingsymmetryclassifiedconditionscritical
verification ladder T0 review T1 audit T2 compute T3 formal
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It is necessary to break both time-reversal and parity symmetries to realize a Josephson, or superconducting, diode exhibiting nonreciprocal critical direct-currents (DC). In fact, these conditions are still insufficient. The dependencies of the free energy on the phase difference across the junction and the magnetic field are classified, exhibiting the current-reversion (JR), field-reversion, and field-current reversion conditions, respectively. To exhibit the DC Josephson diode effect, all symmetries satisfying the JR condition need to be broken. The relations of critical currents with respect to the magnetic field are classified into five classes, including three exhibiting the diode effect. These symmetry considerations are applied to concrete examples. Our work reveals that the DC Josephson diode effect is a natural consequence of the JR symmetry breaking, hence, providing a guiding principle to understand or design a DC Josephson diode.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 13 citations worldwide. Full citation record

  1. Giant and robust Josephson diode effect in multiband topological nanowires

    cond-mat.mes-hall 2025-10 conditional novelty 7.0 of 10

    In multiband Majorana nanowires, spin-parity band exchange yields a robust, high-efficiency Josephson diode plateau.

  2. Josephson diode effect: a phenomenological perspective

    cond-mat.supr-con 2025-06 conditional novelty 6.0 of 10

    A phenomenological RCSJ framework classifies Josephson diode effects and shows Shapiro steps and noise can distinguish intrinsic, extrinsic, and pseudo diode mechanisms.

  3. Circuit-level-configurable Zero-field Superconducting Diodes: A Universal Platform Beyond Intrinsic Symmetry Breaking

    cond-mat.supr-con 2025-05 conditional novelty 6.0 of 10

    A Cooper-pair transistor shows a zero-field superconducting diode effect caused by the chemical potential shift from external line resistance, not intrinsic symmetry breaking.

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