Journal
PHYSICAL REVIEW B
Volume 100, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.100.045109
Keywords
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Funding
- German Scleroderma Foundation [SPP 1666]
- JSPS KAKENHI [17K17801]
- Kato foundation for Promotion of Science
- National Science Foundation [ACI-1532235, ACI-1532236]
- University of Colorado Boulder
- Colorado State University
- Research Grant for Young Scientists (Research Center for Materials Backcasting Technology, School of Engineering, Nagoya University)
- Grants-in-Aid for Scientific Research [17K17801] Funding Source: KAKEN
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We report the anomalous Hall effect (AHE) in antiperovskite Mn3NiN with substantial doping of Cu on the Ni site (i.e., Mn3Ni1-xCuxN), which stabilizes a noncollinear antiferromagnetic (AFM) order compatible with the AHE. Observed on both sintered polycrystalline pieces and single crystalline films, the AHE does not scale with the net magnetization, contrary to the conventional ferromagnetic case. The existence of the AHE is explained through symmetry analysis based on the Gamma(4g) AFM order in Cu doped Mn3NiN. Density functional theory calculations of the intrinsic contribution to the AHE reveal the nonvanishing Berry curvature in momentum space due to the noncollinear magnetic order. Combined with other attractive properties, the antiperovskite Mn(3)AN system offers great potential in AFM spintronics.
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