论文标题
奇妙的平板乐队和在哪里可以找到它们：COSN型化合物
Fantastic flat bands and where to find them: The CoSn-type compounds
论文作者
论文摘要
Kagome晶格上的量子干扰会产生带有狭窄带宽的电子带，称为扁平带。结合该晶格的晶体结构可以与非标准成分建立强的电子相关性，但前提是这些频段位于费米水平。在六种化合物中，具有COSN结构类型（FeGE，FESN，COSN，NIIN，RHPB和PTTL）形成过渡金属形成Kagome晶格。这两种铁变种是强大的抗铁磁铁，因此我们专注于后四个，并研究了它们的热力学和运输特性。我们考虑这些结果并计算出的带结构，以定位和表征这些材料中的平坦带。我们建议COSN和RHPB值得探索平坦的乐队物理学的注意力。
Quantum interference on the kagome lattice generates electronic bands with narrow bandwidth, called flat bands. Crystal structures incorporating this lattice can host strong electron correlations with non-standard ingredients, but only if these bands lie at the Fermi level. In the six compounds with the CoSn structure type (FeGe, FeSn, CoSn, NiIn, RhPb, and PtTl) the transition metals form a kagome lattice. The two iron variants are robust antiferromagnets so we focus on the latter four and investigate their thermodynamic and transport properties. We consider these results and calculated band structures to locate and characterize the flat bands in these materials. We propose that CoSn and RhPb deserve the community's attention for exploring flat band physics.
