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arXiv · 1812.06382

Temperature dependence of the $^{13}$C hyperfine structure of the negatively-charged nitrogen-vacancy center in diamond

M. S. J. Barson·P. M. Reddy·S. Yang·N. B. Manson·J. Wrachtrup·M. W. Doherty
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Abstract

The nitrogen-vacancy (NV) center is a well utilized system for quantum technology, in particular quantum sensing and microscopy. Fully employing the NV center's capabilities for metrology requires a strong understanding of the behavior of the NV center with respect to changing temperature. Here, we probe the NV electronic spin density as the surrounding crystal temperature changes from 10 K to 700 K by examining its $^{13}$C hyperfine interactions. These results are corroborated with \textit{ab initio} calculations and demonstrate that the change in hyperfine interaction is small and dominated by a change in the hybridization of the orbitals constituting the spin density. Thus indicating that the defect and local crystal geometry is returning towards an undistorted structure at higher temperature.

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M. S. J. Barson, P. M. Reddy, S. Yang, N. B. Manson, J. Wrachtrup, M. W. Doherty. 2018-12-16. Temperature dependence of the $^{13}$C hyperfine structure of the negatively-charged nitrogen-vacancy center in diamond. https://doi.org/10.1103/physrevb.99.094101

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