Correction to: Nature https://doi.org/10.1038/nature23268Published online 19 July 2017

In the Acknowledgements section of this Article, the sentence starting ‘Z.W. and B.A.B.,…’ should have read: ‘Z.W. and B.A.B., and part of the development of the initial theory and further ab initio work, were supported by the Department of Energy de-sc0016239. Z.W. and B.A.B. acknowledge additional support from a Simons Investigator Award, the Packard Foundation and the Schmidt Fund for Innovative Research. The development of the practical part of the theory, the tables, some of the code development and additional ab initio work was funded by NSF EAGER grant number DMR-1643312, ONR N00014-14-1-0330 and NSF-MRSEC DMR-1420541.’. The original Article has not been corrected.