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Condensed Matter > Superconductivity
Title: Superconductivity in the $\mathbb{Z}_2$ kagome metal KV$_3$Sb$_5$
(Submitted on 16 Dec 2020 (v1), last revised 16 Mar 2021 (this version, v2))
Abstract: 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.
Submission history
From: Brenden Ortiz [view email][v1] Wed, 16 Dec 2020 17:42:11 GMT (6709kb,D)
[v2] Tue, 16 Mar 2021 22:30:31 GMT (6779kb,D)
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