论文标题
$ \ Mathbb {z} _2 $ kagome Metal KV $ _3 $ SB $ _5 $中的超导率
Superconductivity in the $\mathbb{Z}_2$ kagome metal KV$_3$Sb$_5$
论文作者
论文摘要
在这里，我们报告了二维Kagome Metal KV $ _3 $ SB $ _5 $的单晶中散装超导的观察。磁敏感性，电阻率和热容量测量结果揭示了低于$ t_c = 0.93 $ K的超导率，密度功能理论（DFT）计算进一步将正常状态描述为$ \ mathbb {z} _2 _2 _2 $拓扑金属。我们的结果表明，在相关的kagome金属CSV $ _3 $ _3 $ _5 $中，最近对超导性的观察可能是AV $ _3 $ _3 $ SB $ _5 $（A：K，RB，CS）家族的共同特征Kagome晶格。
Here we report the observation of bulk superconductivity in single crystals of the two-dimensional kagome metal KV$_3$Sb$_5$. Magnetic susceptibility, resistivity, and heat capacity measurements reveal superconductivity below $T_c = 0.93$K, and density functional theory (DFT) calculations further characterize the normal state as a $\mathbb{Z}_2$ topological metal. Our results demonstrate that the recent observation of superconductivity within the related kagome metal CsV$_3$Sb$_5$ is likely a common feature across the AV$_3$Sb$_5$ (A: K, Rb, Cs) family of compounds and establish them as a rich arena for studying the interplay between bulk superconductivity, topological surface states, and likely electronic density wave order in an exfoliable kagome lattice.
