mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal University10.26907/mrsej-25102mrisel-277Research ArticleСтатьиInfluence of 14N hyperfine interaction on electron nuclear double resonance of boron vacancy in hexagonal boron nitrideMaminG. V.

Kazan 420008

george.mamin@kpfu.ruDmitrievaE. V.

Kazan 420008

MurzakhanovF. F.

Kazan 420008

GrachevaI. N.

Kazan 420008

SoltamovV. A.

St.Petersburg 194021

GafurovM. R.

Kazan 420008

Institute of Physics, Kazan Federal UniversityRussian FederationIoffe Physical-Technical Institute of RASRussian Federation20252102202527125102 (9 pp.)Copyright © Mamin G.V., Dmitrieva E.V., Murzakhanov F.F., Gracheva I.N., Soltamov V.A., Gafurov M.R., 20252025Mamin G.V., Dmitrieva E.V., Murzakhanov F.F., Gracheva I.N., Soltamov V.A., Gafurov M.R.Mamin G.V., Dmitrieva E.V., Murzakhanov F.F., Gracheva I.N., Soltamov V.A., Gafurov M.R.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/277

The research focuses on the explanation of a phenomenon observed in the spectra of electron-nuclear resonance (ENDOR) pertaining to nitrogen atoms adjacent to the boron vacancy (VB-) defect in hexagonal boron nitride (hBN). The phenomenon is manifested as a shift of the ENDOR spectrum lines with respect to the nitrogen Larmor frequency. It is hypothesized that these shifts are indicative of a substantial hyperfine interaction between the VB- defect and the 14N nuclei in hBN. A calculation utilizing second-order perturbation theory was executed to determine the positions of the ENDOR spectrum lines, resulting in the formulation of correction equations. The values obtained from the perturbation theory corrections align well with the experimental results. The extent of nuclear state admixture into electron states was found to be around 0.04-0.07%.

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The authors declare that there are no conflicts of interest present.