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PHASE TRANSITIONS

Superconductivity in an insulator

The superconductor–insulator phase transition is a quantum phenomenon that reveals a competition between the superconducting phase order and charge localization. Now, microwave spectroscopy is shown to be a promising approach to investigate this effect in controllable one-dimensional Josephson arrays.

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Fig. 1: QPS-driven superconductor–insulator phase transition and its frequency control.

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Correspondence to Alexander D. Mirlin.

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Mirlin, A.D., Protopopov, I.V. Superconductivity in an insulator. Nat. Phys. 15, 880–881 (2019). https://doi.org/10.1038/s41567-019-0580-y

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