Dual-component anomalous Hall effect in a helical spin-spiral metamagnet-Reference-Cited by-同舟云学术

Dual-component anomalous Hall effect in a helical spin-spiral metamagnet

Published:2024-02-05 Issue:6 Volume:124 Page:
ISSN:0003-6951
Container-title:Applied Physics Letters
language:en
Short-container-title:

Author:

Prestigiacomo Joseph C.¹^ORCID,Jamer Michelle E.²^ORCID,Callahan Patrick G.¹^ORCID,Bennett Steven P.¹^ORCID

Affiliation:

1. Materials Science and Technology Division, U.S. Naval Research Laboratory 1 , Washington, DC 20375, USA

2. Physics Department, U.S. Naval Academy 2 , Annapolis, Maryland 21402, USA

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-spiral state where they compete with metamagnetism and topological Hall effects, maintaining finite values at least up to the high-temperature FM phase.

Funder

Office of Naval Research

Publisher

AIP Publishing

Link

https://pubs.aip.org/aip/apl/article-pdf/doi/10.1063/5.0170846/19617268/062409_1_5.0170846.pdf

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