论文标题
zrsis中的节点线驱动异常敏感性
Nodal-line driven anomalous susceptibility in ZrSiS
论文作者
论文摘要
我们展示了一种独特的方法，可以通过热力学方法测试节点线物理的特征。通过测量ZRSIS中的磁敏感性，我们发现了从二磁性行为到顺磁性的有趣的温度驱动的交叉。我们表明，异常行为代表了通过均值o化学压（ZR代替HF），量子振荡和理论模型NG的均值nodal线物理学的真实热力学特征。易感性的异常部分本质上是轨道，由于费米水平的附近与通过两个节点线的交叉所产生的退化点相邻。此外，通过调整FERM水平来揭示在退化点的意外LIFSHITZ拓扑转变。 ZRSIS中的目前发现为各种与其他相关材料中的热力学方法测试的各种淋巴结物理相关现象提供了一个新的诱人起点。
We demonstrate a unique approach to test the signature of the nodal-line physics by thermodynamic methods. By measuring magnetic susceptibility in ZrSiS we found an intriguing temperature-driven crossover from dia- to paramagnetic behavior. We show that the anomalous behavior represents a real thermodynamic signature of the underlying nodal-line physics through the means o chemical pressure (isovalent substitution of Zr for Hf), quantum oscillations, and theoretical model ng. The anomalous part of the susceptibility is orbital by nature, and it arises due to the vicinity of the Fermi level to a degeneracy point created by the crossing of two nodal lines. Furthermore, an unexpected Lifshitz topological transition at the degeneracy point is revealed by tuning the Ferm level. The present findings in ZrSiS give a new and attractive starting point for various nodal-lin physics-related phenomena to be tested by thermodynamic methods in other related materials.
