Tilted $p$-wave magnet candidate CeNiAsO

Zhuo Wang; Zheng Liu; Shuo Zou; Hua-Xun Li; Jin-Xin Hu; Zhuolun Qiu; Ze Wang; Jiamin Gong; Lucheng Wei; Kangjian Luo; Hai Zeng; Meng Zhang; Chao Dong; Chuanyin Xi; Junfeng Wang; Jiakun Fang; Xiaotao Han; Guang-Han Cao; Liang Li; Yongkang Luo

arXiv · 2608.19856

Tilted $p$-wave magnet candidate CeNiAsO

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Abstract

The unexpectedly small ordered moments of CeNiAsO, a candidate for correlated $p$-wave magnet, have posed a serious challenge to the precise determination of its magnetic structure, hindering the understanding of its fundamental properties. By leveraging the high sensitivity to local internal fields, our $^{75}$As nuclear quadrupole / magnetic resonance experiments reveal a commensurate antiferromagnetic order with a small out-of-plane moment $m_z\approx0.05$ $\mu_{\mathrm{B}}$. This tilted magnetic configuration not only rotates the spin polarization axis away from the crystallographic $\mathbf{c}$-axis, but also enhances the non-relativistic spin splitting. We refer to this rare paradigm as a \textit{tilted $p$-wave magnet}.

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Zhuo Wang, Zheng Liu, Shuo Zou, Hua-Xun Li, Jin-Xin Hu, Zhuolun Qiu, Ze Wang, Jiamin Gong, Lucheng Wei, Kangjian Luo, Hai Zeng, Meng Zhang, Chao Dong, Chuanyin Xi, Junfeng Wang, Jiakun Fang, Xiaotao Han, Guang-Han Cao, Liang Li, Yongkang Luo. 2026-08-20. Tilted $p$-wave magnet candidate CeNiAsO. https://arxiv.org/abs/2608.19856

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