@article{oai:repo.qst.go.jp:00082634,
 author = {Viktor, Ivády and Zheng, Huijie and Wickenbrock, Arne and Bougas, Lykourgos and Chatzidrosos, Georgios and Nakamura, Kazuo and Sumiya, Hitoshi and Takeshi, Ohshima and Junichi, Isoya and Budker, Dmitry and A. Abrikosov, Igor and Gali, Adam and Takeshi, Ohshima and Junichi, Isoya},
 journal = {PHYSICAL REVIEW B},
 month = {Jan},
 note = {The nitrogen-vacancy center (NV center) in diamond at magnetic fields corresponding to the ground-state
level anticrossing (GSLAC) region gives rise to rich photoluminescence (PL) signals due to the vanishing
energy gap between the electron spin states, which enables for a broad variety of environmental couplings to
have an effect on the NV center’s luminescence. Previous works have addressed several aspects of the GSLAC
photoluminescence, however, a comprehensive analysis of the GSLAC signature of NV ensembles in different
spin environments at various external fields is missing. Here we employ a combination of experiments and
recently developed numerical methods to investigate in detail the effects of transverse electric and magnetic
fields, strain, P1 centers, NV centers, and the 13C nuclear spins on the GSLAC photoluminescence. Our
comprehensive analysis provides a solid ground for advancing various microwave-free applications at the
GSLAC, including but not limited to magnetometry, spectroscopy, dynamic nuclear polarization (DNP), and
nuclear magnetic resonance (NMR) detection. We demonstrate that not only the most abundant 14NV center but
the 15NV can also be utilized in such applications.},
 title = {Photoluminescence at the ground-state level anticrossing of the nitrogen-vacancy center in diamond: A comprehensive study},
 volume = {103},
 year = {2021}
}