Weyl fermions and the anomalous Hall effect in metallic ferromagnets

@article{Chen2013WeylFA,
  title={Weyl fermions and the anomalous Hall effect in metallic ferromagnets},
  author={Yu-Hsiang Chen and Doron L. Bergman and Anton A. Burkov},
  journal={Physical Review B},
  year={2013},
  volume={88},
  pages={125110}
}
We reconsider the problem of the anomalous Hall effect in ferromagnetic SrRuO_3, incorporating insights from the recently developed theory of Weyl semimetals. We demonstrate that SrRuO_3 possesses a large number of Weyl nodes, separated in momentum space, in its band structure. While the nodes normally do not coincide with the Fermi energy, unless the material is doped, we show that even the nodes inside the Fermi sea have a significant effect on the physical properties of the material. In… 

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