Berry-curvatures and anomalous Hall effect in Heusler compounds

Jurgen Kubler; Claudia Felser

doi:10.1103/PhysRevB.85.012405

Berry-curvatures and anomalous Hall effect in Heusler compounds

Materials Science 2013-05-30 v1 Computational Physics

Authors: Jurgen Kubler , Claudia Felser

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Abstract

Berry curvatures are computed for a set of Heusler compounds using density functional (DF) calculations and the wave functions that DF provide. The anomalous Hall conductivity is obtained from the Berry curvatures. It is compared with experimental values in the case of Co $_2$ CrAl and Co $_2$ MnAl. A notable trend cannot be seen but the range of values is quite enormous. The results for the anomalous Hall conductivities and their large variations can be qualitatively understood by means of the band structure and the Fermi-surface topology.

Keywords

Berry curvature anomalous Hall effect Heusler compounds density functional theory band structure Fermi-surface topology Co2CrAl Co2MnAl

Cite

@article{arxiv.1110.2878,
  title  = {Berry-curvatures and anomalous Hall effect in Heusler compounds},
  author = {Jurgen Kubler and Claudia Felser},
  journal= {arXiv preprint arXiv:1110.2878},
  year   = {2013}
}

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