AV $_3$ Sb $_5$可果美超导体的完全可熔性：混合A位AV $_3$ Sb $_5$（A：K，Rb，Cs）合金的设计
Complete miscibility amongst AV$_3$Sb$_5$ kagome superconductors: design of mixed A-site AV$_3$Sb$_5$ (A: K, Rb, Cs) alloys
摘要：
在这项工作中，我们探索的AV $_3$ Sb $_5$家庭通过A位合金化的化学性质相图。我们证明了碱位点的完全可吸收性，突出了三种母体化合物是单一固溶体的末端。利用多晶和单晶方法，我们绘制了两个主要的电子不稳定性的依赖关系：（1）电荷密度波（CDW）的开始顺序（$T_\text{CDW}$）和（2）超导性的开始（$T_\text{c}$）与碱金属网站的组成。我们在$T_\text{CDW}$和$T_\text{c}$中显示出连续的趋势，包括K $_{1-x}$ Cs $_{x}$ V $_3$ Sb $_5$合金中CDW稳定性增强的区域。总之，我们的研究结果开辟了新的化学微扰和探索类AV $_3$ Sb $_5$戈薇超导体的化学性质的关系。
英文摘要：
In this work we explore the chemical-property phase diagram of the AV$_3$Sb$_5$ family through A-site alloying. We demonstrate full miscibility of the alkali-site, highlighting that the three parent compounds are the terminal ends of a single solid-solution. Using both polycrystalline and single crystal methods, we map the dependence of the two primary electronic instabilities: (1) the onset of charge density wave (CDW) order ($T_\text{CDW}$) and (2) the onset of superconductivity ($T_\text{c}$) with alkali-site composition. We show continuous trends in both $T_\text{CDW}$ and $T_\text{c}$, including a region of enhanced CDW stability in K$_{1-x}$Cs$_{x}$V$_3$Sb$_5$ alloys. Together, our results open new routes for chemical perturbation and exploration of the chemical-property relationships in the class of AV$_3$Sb$_5$ kagome superconductors.
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