2024
DOI: 10.1063/5.0170846
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Dual-component anomalous Hall effect in a helical spin-spiral metamagnet

Joseph C. Prestigiacomo,
Michelle E. Jamer,
Patrick G. Callahan
et al.

Abstract: We report a dual-component anomalous Hall effect (AHE) in polycrystalline Fe3Ga4 thin films grown on STO (001) and Al2O3 substrates. Systematic magnetic and magnetotransport measurements reveal an AHE consisting of positive and negative contributions that coexist across a wide range of temperatures and magnetic phases. We find that both magnitudes are nearly equal in the low-temperature ferromagnetic (FM) phase, but that their relative ratio is reduced upon heating through the antiferromagnetic helical spin-sp… Show more

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