What question did this study set out to answer?

This research aims to explore the effects of asymmetric residual oxygen on charge transport in infinite-layer nickelates.

April 13, 2026Communications PhysicsOpen Access

Nonreciprocal charge transport in asymmetric oxygen-reduced La0.8Sr0.2NiO2 superlattices

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Authors

TNTaisei NishidaBunkyo University MOMotoki Osada SSShun SasanoThe University of Tokyo

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Implication

This research investigates nonreciprocal charge transport in asymmetric bicolor and tricolor superconducting superlattices, suggesting implications for superconducting mechanisms.

Key Points

This research aims to explore the effects of asymmetric residual oxygen on charge transport in infinite-layer nickelates.
Investigated oxygen reduction effects in superlattices using nonreciprocal transport measurements.
Used scanning transmission electron microscopy to analyze oxygen distribution at interfaces.
Focused on bicolor and tricolor superlattices formed from SrTiO3, LaAlO3, and La0.8Sr0.2NiO2.
Identified asymmetries in charge transport linked to residual oxygen at superlattice interfaces.
Demonstrated the role of stacking sequence and oxygen distribution on nonreciprocal transport.
Showed inversion symmetry breaking occurs at superconducting transition, informing superconducting mechanisms.

Cite This Study

Nishida et al. (2026) studied this question.

synapsesocial.com/papers/69dc87ea3afacbeac03e9f80 https://doi.org/10.1038/s42005-026-02616-5

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Implication

This research investigates nonreciprocal charge transport in asymmetric bicolor and tricolor superconducting superlattices, suggesting implications for superconducting mechanisms.

Nonreciprocal charge transport in asymmetric oxygen-reduced La0.8Sr0.2NiO2 superlattices

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Implication

Key Points

Cite This Study

Nonreciprocal charge transport in asymmetric oxygen-reduced La0.8Sr0.2NiO2 superlattices

Discussion

Member takes

Implication

Key Points

Cite This Study

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