论文标题
收费订单景观和竞争与Kagome金属的超导性
Charge order landscape and competition with superconductivity in kagome metals
论文作者
论文摘要
在Kagome金属AV3SB5（A = K，RB，CS）中，三维电荷顺序（3D-CO）是主要的不稳定性，它为其他集体订单奠定了阶段，包括单向条纹顺序，轨道通量，轨道磁通序，电子性nematoric nematicitient and ExprySconcantivity。在这里，我们使用高分辨率角度分辨的光发射光谱来确定AV3SB5中三维电荷顺序（3D-CO）的显微镜结构及其与超导性的相互作用。我们的方法是基于确定由3D-CO诱导的kagome带的异常分裂，该kagome带提供了一种敏感的方法来完善相邻的kagome平面中的空间电荷模式。我们发现3D-CO结构对组成和掺杂的明显依赖性。观察到的CSV3SB5与其他化合物之间的差异可能是CSV3（SB，SN）5中的双层超导性的基础，以及KV3SB5和RBV3SB5中TC的抑制。我们的结果为AV3SB5的丰富相图提供了新的见解。
In kagome metals AV3Sb5 (A = K, Rb, Cs), three-dimensional charge order (3D-CO) is the primary instability that sets the stage for other collective orders to emerge, including unidirectional stripe order, orbital flux order, electronic nematicity, and superconductivity. Here, we use high-resolution angle-resolved photoemission spectroscopy to determine the microscopic structure of three-dimensional charge order (3D-CO) in AV3Sb5 and its interplay with superconductivity. Our approach is based on identifying an unusual splitting of kagome bands induced by 3D-CO, which provides a sensitive way to refine the spatial charge patterns in neighboring kagome planes. We found a marked dependence of the 3D-CO structure on composition and doping. The observed difference between CsV3Sb5 and the other compounds potentially underpins the double-dome superconductivity in CsV3(Sb,Sn)5 and the suppression of Tc in KV3Sb5 and RbV3Sb5. Our results provide fresh insights into the rich phase diagram of AV3Sb5.
