Topological Weyl semimetals in the chiralantiferromagnetic materials Mn3Ge and 
Mn3Sn

Yang, Hao; Sun, Yan; Zhang, Yang; Shi, Wu-Jun; Parkin, Stuart S. P.; Yan, Binghai

doi:10.1088/1367-2630/aa5487

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学術論文

Topological Weyl semimetals in the chiralantiferromagnetic materials Mn₃Ge and Mn₃Sn

MPS-Authors

Yang, Hao
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

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Parkin, Stuart S. P.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

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https://doi.org/10.1088/1367-2630/aa5487
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Yang_2017_New_J._Phys._19_015008.pdf
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引用

Yang, H., Sun, Y., Zhang, Y., Shi, W.-J., Parkin, S. S. P., & Yan, B. (2017). Topological Weyl semimetals in the chiralantiferromagnetic materials Mn₃Ge and Mn₃Sn. New Journal of Physics, 19(1):. doi:10.1088/1367-2630/aa5487.

引用: https://hdl.handle.net/21.11116/0000-000B-234A-B

要旨

Recent experiments revealed that Mn₃Sn and Mn₃Ge exhibit a strong anomalous Hall effect at room temperature, provoking us to explore their electronic structures for topological properties. By ab initio band structure calculations, we have observed the existence of multiple Weyl points in the bulk and corresponding Fermi arcs on the surface, predicting antiferromagnetic Weyl semimetals in Mn3Ge and Mn3Sn. Here the chiral antiferromagnetism in the Kagome-type lattice structure is essential to determine the positions and numbers of Weyl points. Our work further reveals a new guiding principle to search for magnetic Weyl semimetals among materials that exhibit a strong anomalous Hall effect.