Generic model for the hyperkagome iridate Na 4 Ir 3 O 8 in the local-moment regime

@article{Mizoguchi2016GenericMF,
  title={Generic model for the hyperkagome iridate Na 4 Ir 3 O 8 in the local-moment regime},
  author={Tomonari Mizoguchi and Kyusung Hwang and Eric Kin-Ho Lee and Yong Baek Kim},
  journal={Physical Review B},
  year={2016},
  volume={94},
  pages={064416}
}
The hyperkagome iridate, ${\mathrm{Na}}_{4}{\mathrm{Ir}}_{3}{\mathrm{O}}_{8}$, has been regarded as a promising candidate material for a three-dimensional quantum spin liquid. Here the three-dimensional network of corner-sharing triangles forms the hyperkagome lattice of ${\mathrm{Ir}}^{4+}$ ions. Due to strong spin-orbit coupling, the local moments of ${\mathrm{Ir}}^{4+}$ ions are described by the pseudospin ${j}_{\mathrm{eff}}=1/2$ Kramers doublet. The Heisenberg model on this lattice is… 

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Heisenberg–Kitaev physics in magnetic fields

  • L. JanssenM. Vojta
  • Physics
    Journal of physics. Condensed matter : an Institute of Physics journal
  • 2019
TLDR
The recent advances in understanding the field responses of materials that are described by models with strongly bond-dependent spin exchange interactions, such as Kitaev's celebrated honeycomb model and its extensions are reviewed.

Kitaev materials

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It is due to the fact that the q = 0 states do not have net magnetization. To be specific, we have S(q = 0) = i