Correction to: Nature Materials https://doi.org/10.1038/s41563-021-00960-1, published online 22 March 2021.

In the version of this Article originally published, in Fig. 2b the twist angle labels were incorrect for the top two spectra. The top spectrum was mistakenly labelled ‘2.0°’ and the second-from-top spectrum was mistakenly labelled ‘1.0°’; the labels should have been ’20.0°’ and ’10.0°’, respectively. These errors have now been corrected.