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arXiv · 1902.08073

Ultralow-field Nuclear Magnetic Resonance Asymmetric Spectroscopy

Min Jiang·Wenjie Xu·Yunlan Ji·Ji Bian·Shiming Song·Xinhua Peng
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Abstract

Ultralow-field nuclear magnetic resonance (NMR) provides a new regime for many applications ranging from materials science to fundamental physics. However, the experimentally observed spectra show asymmetric amplitudes, differing greatly from those predicted by the standard theory. Its physical origin remains unclear, as well as how to suppress it. Here we provide a comprehensive model to explain the asymmetric spectral amplitudes, further observe more unprecedented asymmetric spectroscopy and find a way to eliminate it. Moreover, contrary to the traditional idea that asymmetric phenomena were considered as a nuisance, we show that more information can be gained from the asymmetric spectroscopy, e.g., the light shift of atomic vapors and the sign of Land$\acute{\textrm{e}}$ $g$ factor of NMR systems.

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Min Jiang, Wenjie Xu, Yunlan Ji, Ji Bian, Shiming Song, Xinhua Peng. 2019-02-21. Ultralow-field Nuclear Magnetic Resonance Asymmetric Spectroscopy. https://arxiv.org/abs/1902.08073

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