An accurate mapping of quantum Heisenberg magnetic models of spin s to strong-coupling magnon systems

@article{Liu1997AnAM,
  title={An accurate mapping of quantum Heisenberg magnetic models of spin s to strong-coupling magnon systems},
  author={Banggui Liu and Gerd Czycholl},
  journal={Journal of Physics: Condensed Matter},
  year={1997},
  volume={9},
  pages={5449-5459}
}
An infinite-U term is introduced into the Holstein - Primakoff-transformed magnon Hamiltonian of quantum Heisenberg magnetic models of spin s. This term removes the unphysical spin-wave states at every site, and automatically truncates the expansion in powers of the magnon occupation operator. The resultant strong-coupling magnon Hamiltonians are accurately equivalent to the original spin Hamiltonians. The on-site U-levels and their implications are studied. Within a simple decoupling… 
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