Extrinsic contribution to anomalous Hall effect in chiral antiferromagnetic (111)-oriented L12-Mn3Ir films

Yuta Kobayashi, Motoi Kimata, Daisuke Kan, Tetsuya Ikebuchi, Yoichi Shiota, Hiroshi Kohno, Yuichi Shimakawa, Teruo Ono, Takahiro Moriyama

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3 Citations (Scopus)

Abstract

Chiral antiferromagnets are regarded as a new class of antiferromagnets owing to its intriguing spin transport properties such as a sizable anomalous Hall effect (AHE). In this work, we fabricated chiral antiferromagnetic L12-Mn3Ir (111)-oriented films and investigated the anomalous Hall conductivity with respect to the chemical order parameter S. It is found that the anomalous Hall conductivity in (111)-oriented films is much more pronounced compared to (001)-oriented films, which is consistent with the theoretical prediction. We also found that the anomalous Hall conductivity strongly depends on the longitudinal conductivity, which could suggest an extrinsic contribution to the AHE in L12-Mn3Ir.

Original languageEnglish
Article number070912
JournalJapanese Journal of Applied Physics
Volume61
Issue number7
DOIs
Publication statusPublished - 2022 Jul 1

Keywords

  • anomalous hall effect
  • antiferromagnetic spintronics
  • chiral antiferromagnets

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