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

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 $\mathbf{k}\cdot \mathbf{p}$ 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.

13 pages, 8 figures

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Cited by in corpus (1)

• Two-dimensional altermagnets: Superconductivity in a minimal microscopic model