Electron spin contrast of high-density and perfectly aligned nitrogen-vacancy centers synthesized by chemical vapor deposition
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2021-01-05 |
| Journal | Applied Physics Express |
| Authors | Kosuke Mizuno, Makoto Nakajima, Hitoshi Ishiwata, Mutsuko Hatano, Takayuki Iwasaki |
| Institutions | Tokyo Institute of Technology, Japan Science and Technology Agency |
| Citations | 8 |
Abstract
Section titled āAbstractāAbstract Nitrogen-vacancy (NV) centers in diamonds provide a high-sensitivity magnetometer. We investigated the spin properties of high-density and perfectly aligned NV centers grown using the chemical vapor deposition method by varying the nitrogen concentration. Basically, the optical initialization and spin-dependent fluorescence are determined by intersystem crossing (ISC) in the excited state. In this study, we found that nitrogen impurities lead to a non-radiative and spin-mixing decay working as a competitive pathway against the ISC, using time-resolved fluorescence analysis. Our results will elucidate NV-defect interaction, which significantly contributes to the quality of the quantum material.