Magnetic Weyl semimetal phase in a Kagomé crystal

Liu, D. F.; Liang, A. J.; Liu, E. K.; Xu, Q. N.; Li, Y. W.; Chen, C.; Pei, D.; Shi, W. J.; Mo, S. K.; Dudin, P.; Kim, T.; Cacho, C.; Li, G.; Sun, Y.; Yang, L. X.; Liu, Z. K.; Parkin, S. S. P.; Felser, C.; Chen, Y. L.

doi:10.1126/science.aav2873

Magnetic Weyl semimetal phase in a Kagomé crystal

Journal Article · Fri Sep 20 00:00:00 EDT 2019 · Science

DOI:https://doi.org/10.1126/science.aav2873· OSTI ID:1574336

^[1]; ^[2]; ^[3]; ^[4]; ^[5]; ^[6]; Pei, D. ^[5]; ^[7]; ^[8]; ^[9]; ^[9]; ^[9]; ^[10]; ^[4]; ^[11]; Liu, Z. K. ^[10]; ^[12]; ^[13]; ^[14]

Max Planck Institute of Microstructure Physics, Halle (Germany); ShanghaiTech Univ., Shanghai (China)
ShanghaiTech Univ., Shanghai (China); ShanghaiTech Lab. for Topological Physics, Shanghai (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Max Planck Institute for Chemical Physics of Solids, Dresden (Germany); Chinese Academy of Sciences (CAS), Beijing (China)
Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)
Univ. of Oxford, Oxford (United Kingdom)
ShanghaiTech Univ., Shanghai (China); ShanghaiTech Lab. for Topological Physics, Shanghai (China); Univ. of Oxford, Oxford (United Kingdom)
ShanghaiTech Univ., Shanghai (China)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Diamond Light Source, Didcot (United Kingdom)
ShanghaiTech Univ., Shanghai (China); ShanghaiTech Lab. for Topological Physics, Shanghai (China)
Tsinghua Univ., Beijing (China)
Max Planck Institute of Microstructure Physics, Halle (Germany)
Max Planck Institute for Chemical Physics of Solids, Dresden (Germany); Harvard Univ., Cambridge, MA (United States)
ShanghaiTech Univ., Shanghai (China); ShanghaiTech Lab. for Topological Physics, Shanghai (China); Univ. of Oxford, Oxford (United Kingdom); Tsinghua Univ., Beijing (China)

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. Here, 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.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: Alexander von Humboldt Foundation; National Natural Science Foundation of China (NNSFC); Shanghai Municipal Science and Technology Major Project; Tsinghua University Initiative Scientific Research Program; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division

Grant/Contract Number:: AC02-05CH11231; AC02-76SF00515

OSTI ID:: 1574336

Alternate ID(s):: OSTI ID: 1608974

Journal Information:: Science, Journal Name: Science Journal Issue: 6459 Vol. 365; ISSN 0036-8075

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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Spin-to-charge conversion in magnetic Weyl semimetals Zhang, Steven S. -L.; Burkov, Anton A.; Martin, Ivar arXiv https://doi.org/10.48550/arxiv.1904.07181	text	January 2019

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