Observation of an anomalous Hall effect in single-crystal Mn3Pt

Autor: Belén E Zuniga-Cespedes, Kaustuv Manna, Hilary M L Noad, Po-Ya Yang, Michael Nicklas, Claudia Felser, Andrew P Mackenzie, Clifford W Hicks
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: New Journal of Physics, Vol 25, Iss 2, p 023029 (2023)
Druh dokumentu: article
ISSN: 1367-2630
DOI: 10.1088/1367-2630/acbc3f
Popis: The Mn _3 X 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, Mn _3 Sn. Aligning antiferromagnetic domains, a necessary step for observation of the AHE, is more challenging for the cubic members of the Mn _3 X 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 Mn _3 Pt, and demonstrate for the first time a substantial AHE in a bulk sample of a cubic member of the Mn _3 X 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.
Databáze: Directory of Open Access Journals