Observation of an anomalous Hall effect in single-crystal Mn3Pt

Belén E Zuniga-Cespedes, Kaustuv Manna, Hilary M L Noad, Po-Ya Yang, Michael Nicklas, Claudia Felser, Andrew P Mackenzie, Clifford W Hicks*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The Mn3X family of compounds was the first in which a large anomalous Hall effect (AHE) was predicted to arise from a purely antiferromagnetic structure, due to the Berry curvature in momentum space. Nearly simultaneously with this prediction, a large AHE was observed experimentally in one of the hexagonal members of this family, Mn3Sn. Aligning antiferromagnetic domains, a necessary step for observation of the AHE, is more challenging for the cubic members of the Mn3X family, due to a combination of smaller spontaneous ferromagnetic moments and much stronger magnetic anisotropy. Here, we use a combination of uniaxial stress and applied magnetic field to align domains of bulk single-crystal Mn3Pt, and demonstrate for the first time a substantial AHE in a bulk sample of a cubic member of the Mn3X family. The AHE remains locked in with essentially no quantitative variation when the stress is ramped back to zero, which shows that it is not a consequence of any stress-induced ferromagnetic moment.
Original languageEnglish
Article number023029
Number of pages9
JournalNew Journal of Physics
Issue number2
Publication statusPublished - 24 Feb 2023


  • Anomalous Hall effect
  • Antiferromagnetism
  • Noncollinear antiferromagnet
  • Uniaxial pressure
  • Berry phase
  • Mn3X


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