Quantum Oscillations Evidence for Topological Bands in Kagome Metal ScV6Sn6

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. Cothrine, Matthew Meier, William R. Zhang, Yang Mandrus, David Li, Lu 

作者机构：Department of Physics University of Michigan Ann ArborMI48109 United States Materials Science and Engineering Department University of Tennessee Knoxville KnoxvilleTN37996 United States Max Planck Institute for Chemical Physics of Solids Dresden01187 Germany Department of Physics and Astronomy University of Tennessee Knoxville KnoxvilleTN37996 United States Min H. Kao Department of Electrical Engineering and Computer Science University of Tennessee KnoxvilleTN37996 United States 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2024年

核心收录：

主　　题：Fermi surface 

摘      要：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 AV6Sn6. 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 ScV6Sn6. 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. © 2024, CC BY-NC-ND.