High-Pressure NMR Enabled by Diamond Nitrogen-Vacancy Centers

• URL: http://arxiv.org/abs/2203.10511v1
• Date: Sun, 20 Mar 2022 10:00:14 GMT
• Title: High-Pressure NMR Enabled by Diamond Nitrogen-Vacancy Centers
• Authors: Yan-Xing Shang, Fang Hong, Jian-Hong Dai, Ya-Nan Lu, Hui Yu, Yong-Hong Yu, Xiao-Hui Yu, Xin-Yu Pan, and Gang-Qin Liu
• Abstract summary: We introduce diamond nitrogen-vacancy (NV) centers as the source and probe of in-situ nuclear spin polarization. We demonstrate hyperpolarization and coherent control of $14$N nuclear spins under high pressures.
• Score: 8.916349941787994
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The integration of NMR and high pressure technique brings unique opportunities to study electronic, structural and dynamical properties under extreme conditions. Despite a great degree of success has been achieved using coil-based schemes, the contradictory requirement on sample volume of these two techniques remains an outstanding challenge. In this letter, we introduce diamond nitrogen-vacancy (NV) centers, as the source and probe of in-situ nuclear spin polarization, to address the sample volume issue. We demonstrate hyperpolarization and coherent control of $^{14}$N nuclear spins under high pressures. NMR spectra of a micro-diamond are measured up to 16.6 GPa, and unexpected pressure shift of the $^{14}$N nuclear quadrupole and hyperfine coupling terms are observed. Our work contributes to quantum sensing enhanced spectrometry under extreme conditions.

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