- 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
- et al.
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.