Correction to: Communications Physics https://doi.org/10.1038/s42005-020-0333-3, published online 3 April 2020.

The original version of this article omitted the following from the Acknowledgements: “DSP was supported by the US Department of Energy (DOE), Office of Science, Basic Energy Sciences, Materials Science and Engineering Division. Partial funding for open access to this research was provided by University of Tennessee’s Open Publishing Support Fund.” This has now been corrected in both the PDF and HTML versions of the article.