Correction to: Nature https://doi.org/10.1038/s41586-020-2208-xPublished online 22 April 2020

In the first sentence of this Article, “Ultrathin ferroelectric materials could potentially enable low-power perovskite ferroelectric tetragonality logic and nonvolatile memories”, the words “perovskite ferroelectric tetragonality” should not have appeared. This error has been corrected online.