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

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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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    Felton, S., Edmonds, A. M., Newton, M. E., Martineau, P. M., Fisher, D., Twitchen, D. J., & Baker, J. M. (2009). Hyperfine interaction in the ground state of the negatively charged nitrogen vacancy center in diamond. Physical Review B: Condensed Matter and Materials Physics, 79(7), [075203]. https://doi.org/10.1103/PhysRevB.79.075203