Robust magnetotransport in disordered ferromagnetic kagome layers with quantum anomalous Hall effect

Koji Kobayashi; Masaki Takagaki; Kentaro Nomura

doi:10.1103/PhysRevB.100.161301

Robust magnetotransport in disordered ferromagnetic kagome layers with quantum anomalous Hall effect

Mesoscale and Nanoscale Physics 2019-10-16 v2

Authors: Koji Kobayashi , Masaki Takagaki , Kentaro Nomura

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Abstract

The magnetotransport properties of disordered ferromagnetic kagome layers are investigated numerically. We show that a large domain-wall magnetoresistance or negative magnetoresistance can be realized in kagome layered materials (e.g. Fe $_3$ Sn $_2$ , Co $_3$ Sn $_2$ S $_2$ , and Mn $_3$ Sn), which show the quantum anomalous Hall effect. The kagome layers show a strong magnetic anisotropy and a large magnetoresistance depending on their magnetic texture. These domain-wall magnetoresistances are expected to be robust against disorder and observed irrespective of the domain-wall thickness, in contrast to conventional domain-wall magnetoresistance in ferromagnetic metals.

Keywords

magnetotransport kagome layers quantum anomalous hall effect domain-wall magnetoresistance negative magnetoresistance ferromagnetic disorder

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@article{arxiv.1908.02727,
  title  = {Robust magnetotransport in disordered ferromagnetic kagome layers with quantum anomalous Hall effect},
  author = {Koji Kobayashi and Masaki Takagaki and Kentaro Nomura},
  journal= {arXiv preprint arXiv:1908.02727},
  year   = {2019}
}

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4 pages, 6 figures, published version

Robust magnetotransport in disordered ferromagnetic kagome layers with quantum anomalous Hall effect

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