论文标题
kagome金属中的电子相关性和通用远程缩放
Electronic correlations and universal long-range scaling in kagome metals
论文作者
论文摘要
我们研究了相关的kagome材料中有效的库仑相互作用的真实空间曲线。通过特定于kv $ _3 $ sb $ _5 $，co $ _3 $ sn $ _2 $ s $ _2 $，FESN和NI $ _3 $ IN，我们分析了代表性的案例，这些案例表现出很大的相关介导的现象，并将它们与原型的前甲基过渡金属金属氧化物相比。从我们受约束的随机相近似研究中，我们发现kagome金属的现场相互作用强度不仅取决于高能量处的筛选过程，而且还取决于状态电子密度的低能杂交曲线。我们的结果表明，由现场相互作用幅度重新缩放，所有kagome金属均表现出通用的远程库仑行为。
We investigate the real-space profile of effective Coulomb interactions in correlated kagome materials. By particularizing to KV$_3$Sb$_5$, Co$_3$Sn$_2$S$_2$, FeSn, and Ni$_3$In, we analyze representative cases that exhibit a large span of correlation-mediated phenomena, and contrast them to prototypical prevoskite transition metal oxides. From our constrained random phase approximation studies we find that the on-site interaction strength in kagome metals not only depends on the screening processes at high energy, but also on the low-energy hybriziation profile of the electronic density of states. Our results indicate that rescaled by the onsite interaction amplitude, all kagome metals exhibit a universal long-range Coulomb behaviour.
