The time‐reversal symmetry broken antiferromagnetic Weyl metallic phase is rare, and it is a typical example of composite quantum materials. Double‐perovskite Sr 2 TaMnO 6 has been investigated using the first‐principles electronic structure method to explore the frustrated antiferromagnetic (AFM)‐metallic electronic state. It has been found that pairs of Weyl points (WP) in the Brillouin zone (BZ). The calculated Wannier charge center and normalized Berry curvatures reveal that the pair of WP are of opposite chirality and connected via Fermi arcs. The calculated anomalous Hall conductivity reached a moderate value just below the Fermi energy (E), coinciding with the WP crossing in the bulk bands due to the non‐cancelation of the Berry curvature in AFM state. The present investigations will lead to a new direction of further exploration of the existence of Weyl metal in the compensated AFM state for prospective future spintronics and quantum computing purposes.
Sadhukhan et al. (2026) studied this question.