Electronic structures and transport properties of noncoplanar antiferromagnet MnTe₂

We study electronic properties of the noncoplanar antiferromagnetic phase of MnTe₂ using the density functional theory plus U (DFT+U) method. MnTe₂, which has a pyrite structure and crystallizes in the cubic Pa-3 space group, exhibits distinctive structural characteristics arising from its atomic arrangement and spin configuration. These structural features are reflected in the electronic band structure, leading to characteristic band splitting, spin texture, and electronic transport. We also compare these properties with those of related antiferromagnets and altermagnets to analyze effects of different structural symmetries on their electronic properties. These results provide understanding of symmetry-dependent electronic characteristics of noncoplanar antiferromagnetic materials and highlight their potential for future spintronic applications.