Discovery of strong type-I Weyl semimetal features in an antiferromagnetic full-Heusler compound

Weyl semimetals are a class of topological semimetals with linear band crossings close to the Fermi level displaying non-trivial chirality, leading to the emergence of several exotic physical properties [New J. Phys. 9.9 (2007):356, Rev. Mod. Phys. 90.1 (2018):015001]. In order for such crossings to exist, either time-reversal or inversion symmetry must be broken [PRB 83.20 (2011): 205101]. Here, we report our discovery of a novel inversion-breaking Weyl semimetal in a full-Heusler compound with several features that are comparatively more intriguing than other inversion-breaking Weyl semimetals. In particular, the distance between two neighboring nodes is large enough to enable a wide range of linear dispersions. Also, only one kind of node can be identified; together with the lack of other trivial points ensures that the low-energy properties of the material are directly related to the presence of the Weyl nodes.