Quantum oscillations evidence for topological bands in kagome metal ScV 6 Sn 6
Quantum oscillations evidence for topological bands in kagome metal ScV 6 Sn 6
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Kagome 金属 ScV 6 Sn 6 拓扑带的量子振荡证据
DOI：
10.1088/1361-648x/ad2803
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发表时间：
2024
期刊：
影响因子：
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通讯作者：
Madhogaria, Richa P.
中科院分区：
文献类型：
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作者：
Zheng, Guoxin;Zhu, Yuan;Mozaffari, Shirin;Mao, Ning;Chen, Kuan-Wen;Jenkins, Kaila;Zhang, Dechen;Chan, Aaron;Arachchige, Hasitha W. Suriya;Madhogaria, Richa P.
具有戈薇晶格的金属提供了容纳平带和狄拉克电子色散的块体材料。最近在AV 6 Sn 6 中发现了一个新的kagome金属家族。这种材料的狄拉克电子结构需要更多的实验证据来证实。在手稿中，我们通过解决 ScV 6 Sn 6 中电输运和磁化的量子振荡来研究这个问题。揭示的轨道与电子能带结构模型一致。此外，主轨道的贝里相被发现在π附近，为拓扑能带结构提供了直接证据，这与计算结果是一致的。我们的结果展示了丰富的物理原理，并揭示了这种戈薇金属的相关拓扑基态。
Metals with kagome lattice provide bulk materials to host both the flat-band and Dirac electronic dispersions. A new family of kagome metals is recently discovered in AV 6 Sn 6. The Dirac electronic structures of this material needs more experimental evidence to confirm. In the manuscript, we investigate this problem by resolving the quantum oscillations in both electrical transport and magnetization in ScV 6 Sn 6. The revealed orbits are consistent with the electronic band structure models. Furthermore, the Berry phase of a dominating orbit is revealed to be around π, providing direct evidence for the topological band structure, which is consistent with calculations. Our results demonstrate a rich physics and shed light on the correlated topological ground state of this kagome metal.