High-frequency pulsed ENDOR spectroscopy of the NV− centre in the commercial HPHT diamond

[Display omitted] •The hyperfine A and quadruple P interaction constants were measured by high-frequency angle-dependent ENDOR spectroscopy.•The values of A and P were fitted using EasySpin Matlab package, with AX,Y=−2.7MHz, AZ=−2.2MHz and P=−4.8MHz.•Based on ENDOR intensity analysis A and P signs w...

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Bibliographic Details
Published in:Journal of magnetic resonance (1997) 2016-01, Vol.262, p.15-19
Main Authors: Yavkin, B.V., Mamin, G.V., Orlinskii, S.B.
Format: Article
Language:English
Subjects:
Diamond
ENDOR
Hyperfine interaction
Nitrogen-vacancy centre
Quadrupole interaction
W-band
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Summary:[Display omitted] •The hyperfine A and quadruple P interaction constants were measured by high-frequency angle-dependent ENDOR spectroscopy.•The values of A and P were fitted using EasySpin Matlab package, with AX,Y=−2.7MHz, AZ=−2.2MHz and P=−4.8MHz.•Based on ENDOR intensity analysis A and P signs were experimentally determined to be negative. This work reports direct 94GHz ENDOR spectroscopy of the 14N nuclei in the NV− centre in single-crystal diamond. Roadmaps of ENDOR frequencies were measured and hyperfine/quadrupole interaction parameters were obtained, with AX,Y=−2.7MHz, AZ=−2.2MHz and P=−4.8MHz. The sign and value of each parameter was calculated using spin Hamiltonian matrix diagonalization, first and second order perturbation theory and confirmed experimentally. Magnetic field magnitude was measured by 13C ENDOR signal with 0.02% precision or 0.5mT. The orientation of quadrupole, hyperfine and fine structure tensors are the same within error of experiment, g-factor is isotropic.
ISSN:1090-7807
1096-0856
DOI:10.1016/j.jmr.2015.11.005