Anomalous Hall effect and spin orbit torques in MnGa/IrMn films: Modification from strong spin Hall effect of antiferromagnet

K. K. Meng; J. Miao; X. G. Xu; Y. Wu; X. P. Zhao; J. H. Zhao; Y. Jiang

doi:10.1103/PhysRevB.94.214413

Anomalous Hall effect and spin orbit torques in MnGa/IrMn films: Modification from strong spin Hall effect of antiferromagnet

Mesoscale and Nanoscale Physics 2017-01-04 v1 Strongly Correlated Electrons

Authors: K. K. Meng , J. Miao , X. G. Xu , Y. Wu , X. P. Zhao , J. H. Zhao , Y. Jiang

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Abstract

We report systematic measurements of anomalous Hall effect(AHE) and spin orbit torques(SOT) in MnGa/IrMn films,, in which a single MnGa epitaxial layer reveals obvious orbital two-channel Kondo (2CK) effect. As increasing the thickness of the antiferromagnet IrMn, the strong spin Hall effect(SHE)has gradually suppressed the orbital 2CK effect and modified the AHE of MnGa.A scaling involving multiple competing scattering mechanisms has been used to distinguish different contributions to the modified AHE. Finally, the sizeable SOT in the MnGa/IrMn films induced by the strong SHE of IrMn have been investigated.The IrMn layer also supplies an in-plane exchange bias field and enables nearly field-free magnetization reversal.

Keywords

anomalous Hall effect spin orbit torque spin Hall effect antiferromagnet Kondo effect magnetization reversal

Cite

@article{arxiv.1609.08245,
  title  = {Anomalous Hall effect and spin orbit torques in MnGa/IrMn films: Modification from strong spin Hall effect of antiferromagnet},
  author = {K. K. Meng and J. Miao and X. G. Xu and Y. Wu and X. P. Zhao and J. H. Zhao and Y. Jiang},
  journal= {arXiv preprint arXiv:1609.08245},
  year   = {2017}
}

Anomalous Hall effect and spin orbit torques in MnGa/IrMn films: Modification from strong spin Hall effect of antiferromagnet

Abstract

Keywords

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