Magnetic Weyl Semimetal in BaCrSe2 with Long-Distance Distribution of Weyl Points

Weyl semimetals (WSMs) have attracted great attentions that provide intriguing platforms for exploring fundamental physical phenomena and future topotronics applications. Despite the fact that numerous WSMs are achieved, WSMs with long-distance distribution of Weyl points (WPs) in given material candidates remain elusive. Here, the emergence of intrinsic ferromagnetic WSMs in BaCrSe2 with the nontrivial nature explicitly confirmed by the Chern number and Fermi arc surface states analysis is theoretically demonstrated. Remarkably, unlike previous WSMs for which opposite chirality WPs are located very close to each other, the WPs of BaCrSe2 host a long-distance distribution, as much as half of the reciprocal space vector, suggesting that the WPs are highly robust and difficult to be annihilated by perturbations. The presented results not only advance the general understanding of magnetic WSMs but also put forward potential applications in topotronics.

Automated summary

This study theoretically demonstrates the existence of intrinsic ferromagnetic Weyl semimetals (WSMs) in BaCrSe2 with nontrivial nature, as confirmed by the Chern number and Fermi arc surface states analysis. Unlike previous WSMs, the WPs of BaCrSe2 have a long-distance distribution, indicating their high robustness against perturbations. These results not only advance the understanding of magnetic WSMs but also propose potential applications in topotronics.