Ab initio study on the possible magnetic topological semimetallic state in MnMg$_{2}$O$_{4}$}

Satoshi Tomita; DaPeng Yao; Hiroki Tsuchiura; Kentaro Nomura

doi:10.1063/9.0000317

paper

Ab initio study on the possible magnetic topological semimetallic state in MnMg $_{2}$ O $_{4}$ }

arXiv:2201.07440 · doi:10.1063/9.0000317

Abstract

We study the electronic state of an inverse spinel compound MnMg $_{2}$ O $_{4}$ based on first-principles calculations. The high-spin state is realized in Mn ions on the diamond lattice, resulting in that this material is found to be a half-metallic semimetal with the minority spin-gap about 3eV, and also with line nodes in the Brillouin zone. The intrinsic anomalous Hall conductivity (AHC) is also computed as a function of the chemical potential of the system assuming the rigid band structure, and is found to exhibit a peak structure with a maximum value of 200 S/cm at only 15 meV above the Fermi level. The relation between the large AHC and Berry curvature in the Brillouin zone is also discussed.

to appear in AIP advances

References in corpus (1)

Weyl semimetal phase in non-centrosymmetric transition metal monophosphides

Ab initio study on the possible magnetic topological semimetallic state in MnMg2​O4​}

Abstract

References in corpus (1)

Ab initio study on the possible magnetic topological semimetallic state in MnMg $_{2}$ O $_{4}$ }