Owing to a printing error, the character denoting exchange interaction appeared incorrectly, it should have appeared as 
. The corrected text is below:
Page 3, second column, second paragraph:
For a Heisenberg hamiltonian 
, where i and j label all the Mn spins in the solid at position R, 
and 
. Using methods developed previously17,19, we calculate the average interaction energy between two Mn spins at the average separation for a given density by using an effective Bohr radius of 13 Å. We estimate from the interaction energy...
Page 5, second column, first line:
Assuming the values of calculated above...
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The online version of the original article can be found at 10.1038/nmat2123
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Myers, R., Mikkelsen, M., Tang, JM. et al. Erratum: Zero-field optical manipulation of magnetic ions in semiconductors. Nature Mater 7, 339 (2008). https://doi.org/10.1038/nmat2158
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DOI: https://doi.org/10.1038/nmat2158
