What question did this study set out to answer?

To investigate the coexistence of topologically protected one-dimensional hinge states and Rashba states in Dirac semimetal Bi0.97Sb0.03 nanoflakes using induced superconducting transport.

August 14, 2026

Coexisting Topological Hinges and 1D Rashba States in Bi0.97Sb0.03 Revealed by the Josephson Effect.

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Authors

BBBiplab BhattacharyyaNational Physical Laboratory SWStijn R. de WitUniversity of Twente ZWZhen WuUniversity of Twente

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Implication

Experimental investigation demonstrates coexisting topological hinge modes and one-dimensional Rashba states in Bi0.97Sb0.03 nanoflakes, highlighting a viable platform for higher-order topology.

Key Points

To investigate the coexistence of topologically protected one-dimensional hinge states and Rashba states in Dirac semimetal Bi0.97Sb0.03 nanoflakes using induced superconducting transport.
Fabricated Josephson junction devices using Dirac semimetal Bi0.97Sb0.03 nanoflakes to probe supercurrent transport and magnetic interference patterns.
Measured Shapiro steps under microwave irradiation to detect fractional 4π-periodic current-phase relations.
Performed tight-binding numerical simulations to model hinge modes and evaluate the influence of quantum confinement on transport.
Demonstrated unconventional magnetic field interference patterns and the suppression of odd (first and third) Shapiro steps, confirming 4π-periodic supercurrents carried by topologically protected hinge states.
Identified quasi-one-dimensional bulk transport arising from quantum confinement, revealing that confined Rashba states broaden the topological hinge modes.

Cite This Study

Bhattacharyya et al. (2026) studied this question.

synapsesocial.com/papers/6a7ec6c6b70b84ec8b912d7e https://doi.org/10.1021/acsnano.6c01686

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Implication

Experimental investigation demonstrates coexisting topological hinge modes and one-dimensional Rashba states in Bi0.97Sb0.03 nanoflakes, highlighting a viable platform for higher-order topology.

Coexisting Topological Hinges and 1D Rashba States in Bi0.97Sb0.03 Revealed by the Josephson Effect.

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Implication

Key Points

Cite This Study

Coexisting Topological Hinges and 1D Rashba States in Bi0.97Sb0.03 Revealed by the Josephson Effect.

Discussion

Member takes

Implication

Key Points

Cite This Study

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