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Inhomogeneous broadening of optically detected magnetic resonance of the ensembles of nitrogen-vacancy centers in diamond by interstitial carbon atoms

MetadataDetails
Publication Date2015-03-09
JournalApplied Physics Letters
AuthorsA. O. Levchenko, V. V. Vasilev, S. A. Zibrov, A. S. Zibrov, A. V. Sivak
InstitutionsHarvard University Press, P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Citations25

We study the impact of the negatively charged nitrogen-vacancy (NV-) center density on the lattice strain resulting in the splitting of the optically detected magnetic resonance of HPHT diamond. A simple model, taking into account the presence of the interstitial carbon atoms, acting like a wedge force on the crystal lattice, explains the broadening and splitting of the optically detected magnetic resonance of the ensemble of NV- centers at densities within the range of 1013 Ć· 1014 cmāˆ’3. This model uses a complete generalized spin Hamiltonian, takes into account the strain-effect of each center in the ensemble and gives good agreement with experimental data.

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