Ab initio study on the possible magnetic topological semimetallic state in MnMg$_{2}$O$_{4}$}
| Autor: | Tomita, Satoshi, Yao, DaPeng, Tsuchiura, Hiroki, Nomura, Kentaro |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | AIP Advances 12, 035331 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/9.0000317 |
| Popis: | 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. Comment: to appear in AIP advances |
| Databáze: | arXiv |
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