Nonmonotonic scaling of the anomalous Hall effect in a bicollinear antiferromagnet
- 1Max Planck Institute of Microstructure Physics, Halle (Saale) 06120, Germany.
- 2RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.
- 3Fundamental Quantum Science Program (FQSP), TRIP Headquarters, RIKEN, Wako 351-0198, Japan.
Abstract
An anomalous Hall effect (AHE) in antiferromagnetic (AF) systems without net magnetization is of considerable interest for fundamental physics and spintronic applications. Of particular interest is the two-dimensional van der Waals antiferromagnet iron telluride (FeTe), which has an unusual magnetically compensated bicollinear AF structure and claimed Kondo interactions that cause strong band renormalization. Here, we investigate the AHE in epitaxial FeTe thin films grown by molecular beam epitaxy. A large anomalous Hall conductivity is exhibited below the Néel temperature ( T N ∼ 60 kelvins) and, notably, becomes nonlinear at high magnetic fields within a narrow temperature window around 49 kelvins, deviating from conventional AHE scaling behavior versus the longitudinal conductivity. The accompanying field-induced canted magnetic moment activates these AHE responses by tuning the Berry curvature derived from FeTe’s topological band structure once the zero-field symmetry constraint is lifted. The unconventional scaling of AHE highlights the intricate interplay between antiferromagnetism, topology, and electronic transport in FeTe.
Related
- Fermi surface and field-induced Lifshitz transition in the antiferromagnet NbMnP exhibiting an anomalous Hall effect
- Breakdown of Anomalous Hall Scaling in Dilute Kondo System
- Thermodynamic origin of the phonon Hall effect in a honeycomb antiferromagnet
- Observing oscillations using the non-magnetic and magnetic spin Hall effect in a non-collinear antiferromagnet
- Harnessing the skyrmion Hall effect for low-power skyrmion transport in a tubular synthetic antiferromagnet
BibTeX
@article{wang2026nonmonotonic,
title = {{Nonmonotonic scaling of the anomalous Hall effect in a bicollinear antiferromagnet}},
author = {Ruifeng Wang and Chi Fang and Ilya Kostanovski and Ke Xiao and Felix Küster and Jenny Davern and Naoto Nagaosa and Stuart S. P. Parkin},
journal = {Science Advances},
year = {2026},
month = oct,
doi = {10.1126/sciadv.aef9859},
url = {https://www.science.org/doi/10.1126/sciadv.aef9859},
note = {CC BY},
}
RIS
TY - JOUR
TI - Nonmonotonic scaling of the anomalous Hall effect in a bicollinear antiferromagnet
AU - Ruifeng Wang
AU - Chi Fang
AU - Ilya Kostanovski
AU - Ke Xiao
AU - Felix Küster
AU - Jenny Davern
AU - Naoto Nagaosa
AU - Stuart S. P. Parkin
PY - 2026
DA - 2026/10/02
JO - Science Advances
DO - 10.1126/sciadv.aef9859
UR - https://www.science.org/doi/10.1126/sciadv.aef9859
AB - An anomalous Hall effect (AHE) in antiferromagnetic (AF) systems without net magnetization is of considerable interest for fundamental physics and spintronic applications. Of particular interest is the two-dimensional van der Waals antiferromagnet iron telluride (FeTe), which has an unusual magnetically compensated bicollinear AF structure and claimed Kondo interactions that cause strong band renormalization. Here, we investigate the AHE in epitaxial FeTe thin films grown by molecular beam epitaxy. A large anomalous Hall conductivity is exhibited below the Néel temperature ( T N ∼ 60 kelvins) and, notably, becomes nonlinear at high magnetic fields within a narrow temperature window around 49 kelvins, deviating from conventional AHE scaling behavior versus the longitudinal conductivity. The accompanying field-induced canted magnetic moment activates these AHE responses by tuning the Berry curvature derived from FeTe’s topological band structure once the zero-field symmetry constraint is lifted. The unconventional scaling of AHE highlights the intricate interplay between antiferromagnetism, topology, and electronic transport in FeTe.
SN - 2375-2548
ER -