Magnetic Weyl semimetal phase in a Kagomé crystal

Journal article

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.

Authors: Liu, D; Liang, A; Liu, E; Xu, Q; Li, Y

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: American Association for the Advancement of Science
• Journal: Science
• Volume: 365
• Issue: 6459
• Pages: 1282-1285
• Publication date: 2019-09-20
• Acceptance date: 2019-08-14
• DOI: 10.1126/science.aav2873
• EISSN: 1095-9203
• ISSN: 0036-8075
• Pmid: 31604236
• Language: English
• Keywords: FFR