论文标题
高压NMR由钻石氮散布中心启用
High-Pressure NMR Enabled by Diamond Nitrogen-Vacancy Centers
论文作者
论文摘要
NMR和高压技术的整合为在极端条件下研究电子，结构和动力学特性带来了独特的机会。尽管使用基于线圈的方案已经取得了很大的成功，但这两种技术的样本体积的矛盾要求仍然是一个重大挑战。在这封信中，我们引入了钻石氮胶囊（NV）中心，作为原位核自旋极化的来源和探测，以解决样品体积问题。我们证明了高压下$^{14} $ n核自旋的超极化和相干控制。微钻石的NMR光谱最高为16.6 GPA，并且观察到$^{14} $ N核四极杆和超精细耦合项的意外压力转移。我们的工作有助于在极端条件下的量子传感增强的光谱法。
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.
