Nitrogen-vacancy (NV–) color centers in diamond were created by implantation of 7 keV 15N(I=1/2) ions into type IIa diamond. Optically detected magnetic resonance was employed to measure the hyperfine coupling of single NV– centers. The hyperfine spectrum from 15NV– arising from implanted 15N could be distinguished from 14NV– centers created by native 14N(I=1) sites. Analysis indicated 1 in 40 implanted 15N atoms give rise to an optically observable 15NV– center. This report ultimately demonstrates a mechanism by which the yield of NV– center formation by N implantation could be measured.

Implantation of Labelled Single Nitrogen Vacancy Centers in Diamond Using 15N. J.R.Rabeau, P.Reichart, G.Tamanyan, D.N.Jamieson, S.Prawer, F.Jelezko, T.Gaebel, I.Popa, M.Domhan, J.Wrachtrup: Applied Physics Letters, 2006, 88[2], 023113 (3pp)