论文标题
连续流动的电子签名，六边形LA2NI7中的磁过渡
Electronic signatures of successive itinerant, magnetic transitions in hexagonal La2Ni7
论文作者
论文摘要
我们使用高分辨率角度分辨的光发射光谱（ARPE）和密度功能理论（DFT）计算来研究La2Ni7的电子和磁性，这是一种冷却后具有三个磁性转换温度的巡回磁系统，在冷却后，该系统以弱的迭代抗抗抗铁药物（WAFM）基础结束。我们的APRES数据显示了几个电子和孔口袋，它们在$γ$点附近具有六角形对称性。我们观察到在T1 = 61 K，T2 = 57 K和T3 = 42 K处连续的磁性转变后，我们观察到频带结构的显着重建。实验数据与DFT计算有合理的一致性，证明了它们适用于巡回抗Fiferromagnet系统。我们的结果详细介绍了磁性排序对基于Ni的弱抗铁磁铁中电子结构的影响。
We use high-resolution angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations to study the electronic and magnetic properties of La2Ni7, an itinerant magnetic system with a series of three magnetic transition temperatures upon cooling, which end in a weak itinerant antiferromagnetic (wAFM) ground state. Our APRES data reveal several electron and hole pockets that have hexagonal symmetry near the $Γ$ point. We observe significant reconstruction of the band structure upon successive magnetic transitions at T1 = 61 K, T2 = 57 K and T3 = 42 K. The experimental data are in a reasonable agreement with DFT calculations, demonstrating their applicability to itinerant antiferromagnet systems. Our results detail the effects of magnetic ordering on the electronic structure in a Ni-based weak antiferromagnet.
