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arXiv · 1908.02727

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

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.

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Koji Kobayashi, Masaki Takagaki, Kentaro Nomura. 2019-10-15. Robust magnetotransport in disordered ferromagnetic kagome layers with quantum anomalous Hall effect. https://doi.org/10.1103/physrevb.100.161301

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