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 need 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.
@article{arxiv.2409.05634,
title = {Quantum Oscillations Evidence for Topological Bands in Kagome Metal ScV6Sn6},
author = {Guoxin Zheng and Yuan Zhu and Shirin Mozaffari and Ning Mao and Kuan-Wen Chen and Kaila Jenkins and Dechen Zhang and Aaron Chan and Hasitha W. Suriya Arachchige and Richa P. Madhogaria and Matthew Cothrine and William R. Meier and Yang Zhang and David Mandrus and Lu Li},
journal= {arXiv preprint arXiv:2409.05634},
year = {2024}
}