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DOE OSTI · 2424227

Magnetic Imaging with Spin Defects in Hexagonal Boron Nitride

Kumar, P.·Fabre, F.·Durand, A.·Clua-Provost, T.·Li, J.·Edgar, J. H.·Rougemaille, N.·Coraux, J.·Marie, X.·Renucci, P.·Robert, C.·Robert-Philip, I.·Gil, B.·Cassabois, G.·Finco, A.·Jacques, V.
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Abstract

Optically active spin defects hosted in hexagonal boron nitride (ℎ-BN) are promising candidates for the development of a two-dimensional (2D) quantum sensing unit. Here, we demonstrate quantitative magnetic imaging with ℎ-BN flakes doped with negatively charged boron-vacancy ($V^{-}_{B}$) centers through neutron irradiation. As a proof-of-concept, we image the magnetic field produced by Cr⁢Te 2 , a van der Waals ferromagnet with a Curie temperature slightly above 300 K. Compared to other quantum sensors embedded in 3D materials, the advantages of the ℎ-BN-based magnetic sensor described in this work are its ease of use, high flexibility, and, more importantly, its ability to be placed in close proximity to a target sample. Further, such a sensing unit will likely find numerous applications in 2D materials research by offering a simple way to probe the physics of van der Waals heterostructures.

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRYColor centersElectron spin resonanceHexagonal boron nitrideMagnetometryOptically detected magnetic resonanceQuantum sensingVacanciesVan der Waals systems

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Kumar, P., Fabre, F., Durand, A., Clua-Provost, T., Li, J., Edgar, J. H., Rougemaille, N., Coraux, J., Marie, X., Renucci, P., Robert, C., Robert-Philip, I., Gil, B., Cassabois, G., Finco, A., Jacques, V.. 2022-12-21. Magnetic Imaging with Spin Defects in Hexagonal Boron Nitride. https://doi.org/10.1103/physrevapplied.18.l061002

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