Numerous angle-resolved photoemission spectroscopy (ARPES) studies of a wide class of low-density metallic systems, ranging from doped transition metal oxides to quasi-two-dimensional interfaces between insulators, exhibit phonon sidebands below the quasiparticle peak as a unique hallmark of polaronic correlations. Here, we single out properties of ARPES spectra that can provide a robust estimate of the effective range (screening length) of the electron-phonon interaction, regardless of the limited experimental resolution, dimensionality, and particular features of the electronic structure, facilitating a general methodology for an analysis of a whole class of materials.

中文翻译：

---

角分辨光发射光谱中电子-声子相互作用范围的表现

从掺杂的过渡金属氧化物到绝缘子之间的准二维界面的各种低密度金属系统的大量角度分辨光发射光谱（ARPES）研究显示出在准粒子峰以下的声子边带是极化子的独特特征相关性。在这里，我们挑选出ARPES光谱的属性，可以提供对电子-声子相互作用的有效范围（屏蔽长度）的可靠估计，而不受限于有限的实验分辨率，尺寸和电子结构的特定特征，从而简化了分析整个材料类别的方法。