The kagome metals AV₃Sb₅ (A = K, Rb, Cs) present an ideal sandbox to study the interrelation between multiple coexisting correlated phases such as charge order and superconductivity. So far, no consensus on the microscopic nature of these states has been reached as the proposals struggle to explain all their exotic physical properties. Among these, field-switchable electric magneto-chiral anisotropy (eMChA) in CsV₃Sb₅ provides intriguing evidence for a rewindable electronic chirality, yet the other family members have not been likewise investigated. Here, we present a comparative study of magneto-chiral transport between CsV₃Sb₅ and KV₃Sb₅. Despite their similar electronic structure, KV₃Sb₅ displays negligible eMChA, if any, and with no field switchability. This is in stark contrast to the non-saturating eMChA in CsV₃Sb₅ even in high fields up to 35 T. In light of their similar band structures, the stark difference in eMChA suggests its origin in the correlated states. Clearly, the V kagome nets alone are not sufficient to describe the physics and the interactions with their environment are crucial in determining the nature of their low-temperature state.

kagome 金属 AV ₃ Sb ₅ (A = K、Rb、Cs) 提供了一个理想的沙箱来研究多个共存相关相（例如电荷顺序和超导性）之间的相互关系。到目前为止，由于这些提议很难解释它们所有奇异的物理特性，因此尚未就这些状态的微观性质达成共识。_{其中，CsV 3} Sb ₅中的场可切换电磁手性各向异性（eMChA）为可重绕电子手性提供了有趣的证据，但其他家族成员尚未得到类似的研究。_{在这里，我们提出了 CsV 3} Sb ₅和 KV ₃ Sb ₅之间磁手性输运的比较研究。尽管电子结构相似，KV ₃ Sb ₅显示的 eMChA（如果有的话）可以忽略不计，并且没有场可切换性。_{这与 CsV 3} Sb ₅中的非饱和 eMChA 形成鲜明对比，即使在高达 35 T 的高场中也是如此。鉴于它们相似的能带结构，eMChA 中的明显差异表明其起源于相关态。显然，V kagome 网络本身不足以描述物理现象，与其环境的相互作用对于确定其低温状态的性质至关重要。