Correction to: Nature Electronics https://doi.org/10.1038/s41928-018-0117-x, published online 13 August 2018.

In the version of this Perspective originally published, in the key for Fig. 2d the labels for the light-blue and dark-blue lines were mistakenly swapped. The light-blue line should have been labelled ‘Tunnel FET’ and the dark-blue line should have been labelled ‘Negative capacitance FET’. This has now been corrected.