期刊
NATURE MATERIALS
卷 20, 期 8, 页码 1079-+出版社
NATURE PORTFOLIO
DOI: 10.1038/s41563-021-00979-4
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资金
- Max Planck Society
- EU
- ERC [742610]
- DFG
- EU Graphene Flagship Core 3 Project
- National Office of Research, Development and Innovation of Hungary (NKFIH) within the National Excellence Program [KKP129866]
- National Quantum Technology Program [2017-1.2.1-NKP-2017-00001]
- Ministry of Innovation and Technology of Hungary within the National Quantum Informatics Laboratory
- Elemental Strategy Initiative by MEXT, Japan [JPMXP0112101001]
- JSPS KAKENHI [JP20H00354]
- CREST, JST [JPMJCR15F3]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) [NRF-2020R1C1C1006914]
- DGIST R&D Program - Korea Ministry of Science and ICT [20-CoE-NT-01]
- National Research Foundation of Korea [20-COE-NT-01] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- European Research Council (ERC) [742610] Funding Source: European Research Council (ERC)
This study reports on optically detected magnetic resonance of a single defect in hexagonal boron nitride, identifying isolated optical emitters with certain unique properties and characteristics.
A plethora of single-photon emitters have been identified in the atomic layers of two-dimensional van der Waals materials(1-8). Here, we report on a set of isolated optical emitters embedded in hexagonal boron nitride that exhibit optically detected magnetic resonance. The defect spins show an isotropic g(e)-factor of similar to 2 and zero-field splitting below 10 MHz. The photokinetics of one type of defect is compatible with ground-state electron-spin paramagnetism. The narrow and inhomogeneously broadened magnetic resonance spectrum differs significantly from the known spectra of in-plane defects. We determined a hyperfine coupling of similar to 10 MHz. Its angular dependence indicates an unpaired, out-of-plane delocalized pi-orbital electron, probably originating from substitutional impurity atoms. We extracted spin-lattice relaxation times T-1 of 13-17 mu s with estimated spin coherence times T-2 of less than 1 mu s. Our results provide further insight into the structure, composition and dynamics of single optically active spin defects in hexagonal boron nitride. The optically detected magnetic resonance of a single defect in hexagonal boron nitride is reported.
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