The antiferromagnetic semiconductor CuFeS2 belongs to a magnetic symmetry class that is of interest for spintronics applications. In addition, its crystal lattice is compatible with Si, making it possible to integrate it with non-magnetic semiconducting structures. Therefore, we investigate this material by finding the effective k⋅p Hamiltonian for the electron- and hole bands. We base this description on \textit{ab initio} calculations and classify the electronic bands by their symmetry. As a result, we find that CuFeS2 exhibits spin-polarized bands and an anomalous Hall effect. Finally, we suggest using cyclotron resonance to verify our proposed effective mass tensors at the conduction band minimum and valence band maximum.
@article{arxiv.2208.08242,
title = {Low-energy Properties of Electrons and Holes in CuFeS$_2$},
author = {Bjørnulf Brekke and Roman Malyshev and Ingeborg-Helene Svenum and Sverre M. Selbach and Thomas Tybell and Christoph Brüne and Arne Brataas},
journal= {arXiv preprint arXiv:2208.08242},
year = {2023}
}