The Heusler compound ${ScInAu}_2$ was previously reported to have a superconducting ground state with a critical temperature of 3.0K. Recent high throughput calculations have also predicted that the material harbors a topologically non-trivial band structure similar to that reported for $\beta$-${PdBi}_2$. In an effort to explore the interplay between the superconducting and topological properties properties, electrical resistance, magnetization, and x-ray diffraction measurements were performed on polycrystalline ${ScInAu}_2$. The data reveal that high-quality polycrystalline samples lack the superconducting transition present samples that have not been annealed. These results indicate the earlier reported superconductivity is non-intrinsic. Several compounds in the Au-In-Sc ternary phase space (${ScAu}_2$, ${ScIn}_3$, and ${Sc}_{2}InA{u}_2$) were explored in an attempt to identify the secondary phase responsible for the non-intrinsic superconductivity. The results suggest that elemental In is responsible for the reported superconductivity in ${ScInAu}_2$.

赫斯勒化合物 ${秒C\mathrm{一世}n\mathrm{一种}你}_2$之前有报道称其具有临界温度为 3.0K 的超导基态。最近的高通量计算还预测，该材料具有类似于所报道的拓扑非平凡能带结构$\beta$——${磷d乙\mathrm{一世}}_2$. 为了探索超导和拓扑性质之间的相互作用，对多晶进行了电阻、磁化和 X 射线衍射测量。${秒C\mathrm{一世}n\mathrm{一种}你}_2$. 数据表明，高质量的多晶样品缺乏未经退火的超导转变存在的样品。这些结果表明早先报道的超导性是非本征的。Au-In-Sc 三元相空间中的几种化合物（${秒C\mathrm{一种}你}_2$, ${秒C\mathrm{一世}n}_3$， 和 ${秒C}_2\mathrm{一世}n\mathrm{一种}{你}_2$) 进行了探索，试图确定导致非本征超导性的第二相。结果表明元素 In 负责报告的超导性${秒C\mathrm{一世}n\mathrm{一种}你}_2$.