By using an ionic liquid as a gate dielectric, superconductivity can be induced in an inorganic band insulator up to a temperature of 15 K by an electric field, opening new directions in superconductivity research.
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Prassides, K. Interfaces heat up. Nature Mater 9, 96–98 (2010). https://doi.org/10.1038/nmat2616
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DOI: https://doi.org/10.1038/nmat2616