Equilibrium charge state of NV centers in diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2021-12-20 |
| Journal | Applied Physics Letters |
| Authors | Chikara Shinei, Masashi Miyakawa, Shuya Ishii, Seiichi Saiki, Shinobu Onoda |
| Institutions | National Institute for Materials Science, National Institutes for Quantum Science and Technology |
| Citations | 27 |
Abstract
Section titled āAbstractāWe investigated charge states of nitrogen vacancy (NV) centers in diamond single crystals. The charge states were evaluated using concentrations of both negatively charged (NVā) and neutral-state (NV0) NV centers. This study specifically examines diamond crystals containing mainly neutral substitutional nitrogen (N0s), NVā centers, and NV0 centers. Results show that the charged states of NV centers evaluated for this study depended on concentrations of both neutral substitutional nitrogen (N0s) and NVT centers, which is a sum of [NVā] and [NV0]. The NV centers were fully negatively charged when the ratio of [NVT] to [N0s] was 1%-20% in our diamond crystals. When [NVT]/[N0s] is larger than 20%-30%, NV0 centers appeared gradually. The concentration ratio between NVā centers and NV0 centers was described using an equilibrium equation.