Hyperfine level structure in nitrogen-vacancy centers near the ground-state level anticrossing
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-08-14 |
| Journal | Physical review. B./Physical review. B |
| Authors | Marcis Auzinsh, Andris BÄrziÅÅ”, Dmitry Budker, Laima Busaite, R. Ferber |
| Institutions | University of California, Berkeley, University of Latvia |
| Citations | 25 |
Abstract
Section titled āAbstractāEnergy levels of nitrogen-vacancy centers in diamond were investigated using\noptically detected magnetic-resonance spectroscopy near the electronic\nground-state level anticrossing (GSLAC) at an axial magnetic field around\n102.4mT in diamond samples with a nitrogen concentration of 1ppm and 200~ppm.\nBy applying radiowaves in the frequency ranges from 0 to 40 MHz and from 5.6 to\n5.9 GHz, we observed transitions that involve energy levels mixed by the\nhyperfine interaction. We developed a theoretical model that describes the\nlevel mixing, transition energies, and transition strengths between the\nground-state sublevels, including the coupling to the nuclear spin of the NV\ncenter\textquotesingle s $^{14}$N and $^{13}$C atoms. The calculations were\ncombined with the experimental results by fitting the ODMR spectral lines based\non a theoretical model, which yielded information about the polarization of\nnuclear spins. This study is important for the optimization of experimental\nconditions in GSLAC-based applications, e.g., microwave-free magnetometry and\nmicrowave-free nuclear-magnetic-resonance probes.\n