Correction to: Nature Materials https://doi.org/10.1038/s41563-021-01026-y, published online 3 June 2021.

In the version of this Article originally published, the units of the Rashba parameter were incorrect as ‘eV m–1’ in the abstract, in the section ‘Physics behind of the spin lifetime anisotropy’, and in the y-axis label of Fig. 4c; the units should have been ‘eV m’. This has now been corrected.