论文标题
统计两极分化的纳米-NMR的相关性的幂律缩放
Power-law scaling of correlations in statistically polarised nano-NMR
论文作者
论文摘要
扩散噪声是液态纳米级核磁共振中光谱线扩大的主要来源，其浅氮胶合中心的主要结果是光谱分辨率有限。这种局限性是由于广泛接受的假设，即核自旋信号相关性在纳米-NMR中呈指数衰减。但是，对扩散的更准确分析表明，由于幂律缩放，相关性可以在更长的时间内存活，从而产生了改善分辨率的可能性，并改变了我们对纳米级扩散的理解。然而，这种行为在实验中仍有待证明。使用三种不同的实验设置和不同的测量技术，我们提供了强大的相关性衰减的证据。这些导致尖锐的光谱线，为此，扩散扩展不必限制分辨率。
Diffusion noise is a major source of spectral line broadening in liquid state nano-scale nuclear magnetic resonance with shallow nitrogen-vacancy centres, whose main consequence is a limited spectral resolution. This limitation arises by virtue of the widely accepted assumption that nuclear spin signal correlations decay exponentially in nano-NMR. However, a more accurate analysis of diffusion shows that correlations survive for a longer time due to a power-law scaling, yielding the possibility for improved resolution and altering our understanding of diffusion at the nano-scale. Nevertheless, such behaviour remains to be demonstrated in experiments. Using three different experimental setups and disparate measurement techniques, we present overwhelming evidence of power-law decay of correlations. These result in sharp-peaked spectral lines, for which diffusion broadening need not be a limitation to resolution.
