Spin–orbital locking, emergent pseudo-spin and magnetic order in honeycomb lattice iridates

  title={Spin–orbital locking, emergent pseudo-spin and magnetic order in honeycomb lattice iridates},
  author={S. Bhattacharjee and Sung-Sik Lee and Y. Kim},
  journal={New Journal of Physics},
  • S. Bhattacharjee, Sung-Sik Lee, Y. Kim
  • Published 2012
  • Physics
  • New Journal of Physics
  • The nature of the effective spin Hamiltonian and magnetic order in the honeycomb iridates is explored by considering a trigonal crystal field effect and spin?orbit (SO) coupling. Starting from a Hubbard model, an effective spin Hamiltonian is derived in terms of an emergent pseudo-spin-1/2 moment in the limit of large trigonal distortions and SO coupling. The present pseudo-spins arise from a spin?orbital locking and are different from the jeff?=?1/2 moments that are obtained when the SO… CONTINUE READING
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