Using electric field gating, researchers demonstrate switching from a single- to a multi-condensate superconducting state at an oxide-based interface, and show that this transition leads to an overall weakening of the superconductivity.
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Hilgenkamp, H., Smink, A.E.M. Suppressing superconductivity by adding it. Nat. Mater. 18, 913–914 (2019). https://doi.org/10.1038/s41563-019-0384-6