Hyperfine interaction in the ground state of the negatively charged nitrogen vacancy center in diamond

S. Felton*, A. M. Edmonds, M. E. Newton, P. M. Martineau, D. Fisher, D. J. Twitchen, J. M. Baker

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    189 Citations (Scopus)

    Abstract

    The N 14, N 15, and C 13 hyperfine interactions in the ground state of the negatively charged nitrogen vacancy (NV-) center have been investigated using electron-paramagnetic-resonance spectroscopy. The previously published parameters for the N 14 hyperfine interaction do not produce a satisfactory fit to the experimental NV- electron-paramagnetic-resonance data. The small anisotropic component of the NV- hyperfine interaction can be explained from dipolar interaction between the nitrogen nucleus and the unpaired-electron probability density localized on the three carbon atoms neighboring the vacancy. Optical spin polarization of the NV- ground state was used to enhance the electron-paramagnetic-resonance sensitivity enabling detailed study of the hyperfine interaction with C 13 neighbors. The data confirmed the identification of three equivalent carbon nearest neighbors but indicated the next largest C 13 interaction is with six, rather than as previously assumed three, equivalent neighboring carbon atoms.

    Original languageEnglish
    Article number075203
    JournalPhysical Review B: Condensed Matter and Materials Physics
    Volume79
    Issue number7
    DOIs
    Publication statusPublished - 12 Feb 2009

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