| publicationDate,title,abstract,id |
| 2023-04-08,Genuine Dirac half-metal: A 2D d0-type ferromagnet Mg4N4, |
| half-metals with the twofold degenerate nodal points at the K (or K') in |
| two-dimensional (2D) materials are misclassified as " |
| to the way graphene was utilized in the earliest studies. Actually, each band |
| crossing point at K or K' is described by a 2D Weyl Hamiltonian with definite |
| chirality; hence, it must be a Weyl point. To the best of our knowledge, there |
| have been no reports of a genuine (i.e., fourfold degenerate) Dirac point |
| half-metal in 2D yet. In this Letter, we proposed for the first time that the |
| 2D d0-type ferromagnet Mg4N4 is a genuine Dirac half-metal with a fourfold |
| degenerate Dirac point at the S high-symmetry point, intrinsic magnetism, high |
| Curie temperature, 100% spin-polarization, robustness to the SOC and uniaxial |
| and biaxial strains, and 100% spin-polarized edge states. The work can be seen |
| as a starting point for future predictions of intrinsically magnetic materials |
| with genuine Dirac points, which will aid the frontier of topo-spintronics |
| researchers.",2304.03919v1 |
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