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de Haas-van Alphen effect of correlated Dirac states in kagome metal Fe3Sn2

Author(s)
Ye, Linda; Chan, Mun K.; McDonald, Ross D.; Graf, David; Kang, Min Gu; Liu, Junwei; Suzuki, Takehito; Comin, Riccardo; Fu, Liang; Checkelsky, Joseph George; ... Show more Show less
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Abstract
Primarily considered a medium of geometric frustration, there has been a growing recognition of the kagome network as a harbor of lattice-borne topological electronic phases. In this study we report the observation of magnetoquantum de Haas-van Alphen oscillations of the ferromagnetic kagome lattice metal Fe3Sn2. We observe a pair of quasi-two-dimensional Fermi surfaces arising from bulk massive Dirac states and show that these band areas and effective masses are systematically modulated by the rotation of the ferromagnetic moment. Combined with measurements of Berry curvature induced Hall conductivity, our observations suggest that the ferromagnetic Dirac fermions in Fe3Sn2 are subject to intrinsic spin-orbit coupling in the d electron sector which is likely of Kane-Mele type. Our results provide insights for spintronic manipulation of magnetic topological electronic states and pathways to realizing further highly correlated topological materials from the lattice perspective. Keywords: Ferromagnetism; Magnetic properties and materials; Topological insulators
Date issued
2019-10
URI
https://hdl.handle.net/1721.1/124554
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Citation
Ye, Linda et al. "de Haas-van Alphen effect of correlated Dirac states in kagome metal Fe3Sn2" Nature Communications 10 (October 2019): 4870 © 2019, The Author(s).
Version: Final published version
ISSN
2041-1723

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