Quantum oscillations evidence for topological bands in kagome metal ScV6Sn6

Guoxin Zheng; Yuan Zhu; Shirin Mozaffari; Ning Mao; Kuan Wen Chen; Kaila Jenkins; Dechen Zhang; Aaron Chan; Hasitha W.Suriya Arachchige; Richa P. Madhogaria; Matthew Cothrine; William R. Meier; Yang Zhang; David Mandrus; Lu Li

doi:10.1088/1361-648X/ad2803

Quantum oscillations evidence for topological bands in kagome metal ScV₆Sn₆

Guoxin Zheng
, Yuan Zhu
, Shirin Mozaffari
, Ning Mao
, Kuan Wen Chen
, Kaila Jenkins
, Dechen Zhang
, Aaron Chan
, Hasitha W.Suriya Arachchige
, Richa P. Madhogaria
, Matthew Cothrine
, William R. Meier
, Yang Zhang
, David Mandrus
, Lu Li

Materials Theory

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

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 p, 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.

Original language	English
Article number	215501
Journal	Journal of Physics Condensed Matter
Volume	36
Issue number	21
DOIs	https://doi.org/10.1088/1361-648X/ad2803
State	Published - May 29 2024

Funding

The work at Michigan is supported by the National Science Foundation under Award No. DMR-2004288 and No. DMR-2317618 (transport measurements), by the Department of Energy under Award No. DE-SC0020184 (magnetometry measurements). D M acknowledges support from the US Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. Y Z acknowledge support from the start-up fund at the University of Tennessee. S M, H W S A, R P M, M C, and W R M acknowledge support from the Gordon and Betty Moore Foundation’s EPiQS Initiative, Grant No. GBMF9069 to D M. The experiment in NHMFL is funded in part by a QuantEmX Grant from ICAM and the Gordon and Betty Moore Foundation through Grant No. GBMF5305 to K-W C, D Z, G Z, A C, Y Z, and K J. A portion of this work was performed at the National High Magnetic Field Laboratory (NHMFL), which is supported by National Science Foundation Cooperative Agreement No. DMR-1644779 and DMR-2128556 and the State of Florida.

Keywords

Fermi surface mapping
kagome metals
quantum oscillations
topological bands

Access to Document

10.1088/1361-648X/ad2803

Cite this

Zheng, G., Zhu, Y., Mozaffari, S., Mao, N., Chen, K. W., Jenkins, K., Zhang, D., Chan, A., Arachchige, H. W. S., Madhogaria, R. P., Cothrine, M., Meier, W. R., Zhang, Y., Mandrus, D., & Li, L. (2024). Quantum oscillations evidence for topological bands in kagome metal ScV₆Sn₆. Journal of Physics Condensed Matter, 36(21), Article 215501. https://doi.org/10.1088/1361-648X/ad2803

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title = "Quantum oscillations evidence for topological bands in kagome metal ScV6Sn6",

abstract = "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 p, 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.",

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AU - Zhu, Yuan

AU - Mozaffari, Shirin

AU - Mao, Ning

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AU - Jenkins, Kaila

AU - Zhang, Dechen

AU - Chan, Aaron

AU - Arachchige, Hasitha W.Suriya

AU - Madhogaria, Richa P.

AU - Cothrine, Matthew

AU - Meier, William R.

AU - Zhang, Yang

AU - Mandrus, David

AU - Li, Lu

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AB - 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 p, 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.

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