On the Formation of Dense Arrays of Nitrogen–Vacancy Centers in Synthetic Single-Crystal Diamonds for Quantum Sensors

• Published in: Nanobiotechnology Reports (Online) Vol. 17; no. 4; pp. 581 - 584
• Main Authors: Tarelkin, S. A., Bolshedvorskii, S. V., Buga, S. G., Drozdova, T. E., Galkin, A. S., Vins, V. G., Nosukhin, S. A., Kuznetsov, M. S., Prikhod’ko, D. D., Shcherbakova, V. S., Liu, Z., Kuo, H., Yao, M.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.08.2022; Springer Nature B.V
• Subjects: Absorption spectra; Chemistry and Materials Science; Color centers; Crystal defects; Diamonds; Electron spin; Impurities; Industrial and Production Engineering; Infrared radiation; Machines; Magnetic measurement; Manufacturing; Materials Science; Nanophotonics; Nanotechnology; Nitrogen; Processes; Quantum sensors; Single crystals
• ISSN: 2635-1676; 1995-0780; 2635-1684; 1995-0799
• DOI: 10.1134/S2635167622040267

The dynamics of the formation of ensembles of nitrogen–vacancy color centers (NV centers) in single-crystal diamond plates after irradiation by high-energy (2 MeV) electrons and subsequent annealing is investigated. The concentration of the nitrogen impurity is determined from the infrared (IR) absorption spectrum to be 90 and 4 ppm for the diamond growth sectors {111} and {001}, respectively. The transverse relaxation times for the electron spin of NV centers are studied; they are found to amount to 200 and 900 ns for the {111} and {001} sectors, respectively, and are limited by the concentration of paramagnetic impurity defects in diamond. The sensitivity of quantum sensors based on the obtained ensembles of NV centers is estimated; the estimation shows feasibility of using denser ensembles in low-field magnetometry.