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Low-energy properties of electrons and holes in CuFeS2

Abstract

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 nonmagnetic 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 ab initio calculations and classify the electronic bands by their symmetry. As a result, we find that CuFeS2 exhibits spin-polarized bands. We also find that the crystal symmetry allows for the 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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Category

Academic article

Language

English

Author(s)

  • Bjørnulf Brekke
  • Roman Malyshev
  • Ingeborg-Helene Svenum
  • Sverre Magnus Selbach
  • Per Thomas Martin Tybell
  • Christoph Brüne
  • Arne Brataas

Affiliation

  • SINTEF Industry / Materials and Nanotechnology
  • Norwegian University of Science and Technology

Year

2022

Published in

Physical review B (PRB)

ISSN

2469-9950

Volume

106

Issue

22

Page(s)

1 - 12

View this publication at Norwegian Research Information Repository