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arXiv · 2203.10511

High-Pressure NMR Enabled by Diamond Nitrogen-Vacancy Centers

Yan-Xing Shang·Fang Hong·Jian-Hong Dai·Ya-Nan Lu·Hui Yu·Yong-Hong Yu·Xiao-Hui Yu·Xin-Yu Pan·Gang-Qin Liu
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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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Yan-Xing Shang, Fang Hong, Jian-Hong Dai, Ya-Nan Lu, Hui Yu, Yong-Hong Yu, Xiao-Hui Yu, Xin-Yu Pan, Gang-Qin Liu. 2022-03-20. High-Pressure NMR Enabled by Diamond Nitrogen-Vacancy Centers. https://arxiv.org/abs/2203.10511

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