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arXiv · 2208.08242

Low-energy Properties of Electrons and Holes in CuFeS$_2$

Bjørnulf Brekke·Roman Malyshev·Ingeborg-Helene Svenum·Sverre M. Selbach·Thomas Tybell·Christoph Brüne·Arne Brataas
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Abstract

The antiferromagnetic semiconductor CuFeS$_2$ 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 $\boldsymbol{k}\cdot\boldsymbol{p}$ 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 CuFeS$_2$ 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.

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Bjørnulf Brekke, Roman Malyshev, Ingeborg-Helene Svenum, Sverre M. Selbach, Thomas Tybell, Christoph Brüne, Arne Brataas. 2022-08-17. Low-energy Properties of Electrons and Holes in CuFeS$_2$. https://doi.org/10.1103/physrevb.106.224421

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