Intense quantum fluctuations arising from geometrical frustrations in kagome-lattice magnets provide a feasible approach to exotic quantum states. Here, we document an unexpected isosymmetric first-order magnetic transition in the recently synthesized frustrated kagome-lattice antiferromagnet Nd3ScBi5, which is characterized by significant latent heat and a pronounced magnetocaloric effect, as well as discontinuous Raman shifts and negligible hysteresis. Employing the magnetocaloric effect as a detection method, in conjunction with systematical field-dependent physical properties, we uncover a distinctive 1/2 magnetization plateau phase with significant quantum fluctuations. Our study unveils Nd3ScBi5 as a prototypical model with an emerging phase of enhanced quantum fluctuations triggered by first-order magnetic transitions.
@article{arxiv.2511.09860,
title = {Quantum fluctuations associated with first-order magnetic transition in a frustrated kagome lattice antiferromagnet},
author = {Zhongchen Xu and Xinyang Liu and Cuiwei Zhang and Shuai Zhang and Feng Jin and Junsen Xiang and Quansheng Wu and Xianmin Zhang and Peijie Sun and Youguo Shi},
journal= {arXiv preprint arXiv:2511.09860},
year = {2025}
}
Comments
13+20 pages, 6+12 figures. Submitted to Physical Review B