{'fraction_non_alphanumeric': 0.03479125248508946, 'fraction_numerical': 0.02982107355864811, 'mean_word_length': 3.4557522123893807, 'pattern_counts': {'":': 0, '<': 1, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
High-ﬁeld 1 H-NMR study around a 1/4 plateau of quantum spin dimer system NH 4 CuCl 3

. We have investigated high-ﬁeld TF- µ SR and 1 H-NMR on the S = 1 / 2 three dimensional spin dimer system NH 4 CuCl 3 , which shows a magnetic order at T N = 1 . 29 K under zero ﬁeld and the two-stepped plateaus in high ﬁeld regions H C1 = 5 . 0 T – H C2 = 12 . 8 T and H C3 = 17 . 9 T – H C4 = 24 . 7 T. Both probes showed spectra containing multiple peaks corresponding to diﬀerent hyperﬁne ﬁelds, demonstrating the existence of magnetically inequivalent dimers in a unit cell. In the slope-state ﬁeld region H < H C1 , the existence of magnetic order was conﬁrmed by the splitting in some of the NMR peaks. The whole width of NMR and µ SR spectra increased with increasing ﬁeld, and no drastic change in their proﬁle was observed at H C1 . This indicates that the change in the spin state is continuous on entering the plateau state, and that no liquid-solid transition of magnons takes place at the phase boundary.