The newfound two-dimensional antiferromagnetic $\mathrm{Gd}{\mathrm{Te}}_3$ has great potential in novel magnetic twistronic and spintronic devices because it has the highest carrier mobility among all known layered magnetic materials. Here, we used high-resolution angle-resolved photoemission spectroscopy to investigate its Fermi-surface topology and low-lying electronic band structure. The Fermi surface is partially gapped by charge-density waves below the transition temperature. Very steep and nearly linear band dispersion near the Fermi energy contributes to the high carrier mobility in $\mathrm{Gd}{\mathrm{Te}}_3$. We find that the scattering rate of the quasiparticle increases linearly as a function of binding energy within a wide energy range, indicating that $\mathrm{Gd}{\mathrm{Te}}_3$ is a non-Fermi-liquid metal. Our results in this paper provide a fundamental understanding of this layered antiferromagnetic material to guide future studies on it.

中文翻译：

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高迁移率二维反铁磁性金属GdTe3的电子结构

新发现的二维反铁磁 $d{特}_3$由于它在所有已知的层状磁性材料中具有最高的载流子迁移率，因此在新型磁性扭转和自旋电子器件中具有巨大的潜力。在这里，我们使用高分辨率的角度分辨光发射光谱来研究其费米面拓扑和低层电子能带结构。在转变温度以下，费米表面被电荷密度波部分地隔开。在费米能量附近非常陡峭且几乎呈线性的带色散有助于提高载流子迁移率$d{特}_3$。我们发现，在较宽的能量范围内，准粒子的散射速率随结合能的增加而线性增加，这表明$d{特}_3$是一种非费米液态金属。我们在本文中的结果提供了对该层反铁磁材料的基本了解，以指导对其进行进一步的研究。