发表机构
AGH University of Krakow; Institute of Low Temperature and Structure Research, Polish Academy of Sciences（克拉科夫AGH科技大学; 波兰科学院低温结构研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究通过多种实验手段表征了EuAgAs单晶的反铁磁有序、磁各向异性及场诱导变磁转变，构建了磁相图，并推测其低场非共线磁结构及竞争相互作用对稳定磁态的关键作用。
AI 中文摘要
EuAgAs是一种反铁磁拓扑材料，表现出有趣的磁行为。我们利用X射线衍射、穆斯堡尔谱、直流磁化、交流磁化率和热容测量研究了其结构、磁性和局域电子性质。结果证实了在$T_\ ext{N}$以下存在反铁磁有序，并揭示了显著的磁各向异性和多个场诱导的变磁转变。我们构建了EuAgAs的磁相图，识别出几个不同的磁区域。观察到的场和温度依赖行为表明在低场区域存在非共线磁结构。场诱导转变的序列类似于在中心对称稀土化合物中观察到的具有斯格明子相的行为，这表明竞争性磁相互作用可能在稳定观察到的磁态中发挥重要作用。
英文摘要
EuAgAs is an antiferromagnetic topological material exhibiting intriguing magnetic behavior. We investigate its structural, magnetic, and local electronic properties using X ray diffraction, Mössbauer spectroscopy, dc magnetization, ac susceptibility, and heat capacity measurements. The results confirm antiferromagnetic ordering below $T_\text{N}$ and reveal pronounced magnetic anisotropy and several field induced metamagnetic transitions. We construct the magnetic phase diagram of EuAgAs, identifying several distinct magnetic regions. The field and temperature dependent behavior observed suggests a noncollinear magnetic structure in the low field regime. The sequence of field induced transitions resembles that observed in centrosymmetric rare earth compounds hosting skyrmion phases, suggesting that competing magnetic interactions may play an important role in stabilizing the observed magnetic states.
Comments15 pages, 14 figures, submitted to PRB
