Magnetic Weyl semimetal phase in a Kagomé crystal

Liu DF, Liang AJ, Liu EK, Xu QN, Li YW, Chen C, Pei D, Shi WJ, Mo SK, Dudin P, Kim T, Cacho C, Li G, Sun Y, Yang LX, Liu ZK, Parkin SSP, Felser C, Chen YL (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Science American Association for the Advancement of Science

Book Volume: 365

Pages Range: 1282-1285

Journal Issue: 6459

DOI: 10.1126/science.aav2873

Abstract

Weyl semimetals are crystalline solids that host emergent relativistic Weyl fermions and have characteristic surface Fermi-arcs in their electronic structure.Weyl semimetals with broken time reversal symmetry are difficult to identify unambiguously. In this work, using angle-resolved photoemission spectroscopy, we visualized the electronic structure of the ferromagnetic crystal Co3Sn2S2 and discovered its characteristic surface Fermi-arcs and linear bulk band dispersions across the Weyl points. These results establish Co3Sn2S2 as a magnetic Weyl semimetal that may serve as a platform for realizing phenomena such as chiral magnetic effects, unusually large anomalous Hall effect and quantum anomalous Hall effect.

Involved external institutions

Max-Planck-Institut für Mikrostrukturphysik (MSP) / Max Planck Institute for Microstructure Physics

Germany (DE) ShanghaiTech University / 上海科技大学

China (CN) University of Oxford

United Kingdom (GB) Lawrence Berkeley National Laboratory (LBNL)

United States (USA) (US) Diamond Light Source

United Kingdom (GB) Tsinghua University

China (CN) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids

Germany (DE)

How to cite

APA:

Liu, D.F., Liang, A.J., Liu, E.K., Xu, Q.N., Li, Y.W., Chen, C.,... Chen, Y.L. (2019). Magnetic Weyl semimetal phase in a Kagomé crystal. Science, 365(6459), 1282-1285. https://doi.org/10.1126/science.aav2873

MLA:

Liu, D. F., et al. "Magnetic Weyl semimetal phase in a Kagomé crystal." Science 365.6459 (2019): 1282-1285.

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