Quantum spin ices and topological phases from dipolar-octupolar doublets on the pyrochlore lattice.

@article{Huang2014QuantumSI,
  title={Quantum spin ices and topological phases from dipolar-octupolar doublets on the pyrochlore lattice.},
  author={Yi-Ping Huang and Gang Chen and Michael A. Hermele},
  journal={Physical review letters},
  year={2014},
  volume={112 16},
  pages={
          167203
        }
}
We consider a class of d- and f-electron systems in which dipolar-octupolar Kramers doublets arise on the sites of the pyrochlore lattice. For such doublets, two components of the pseudospin transform like a magnetic dipole, while the other transforms like a component of the magnetic octupole tensor. Based on a symmetry analysis, we construct and study models of dipolar-octupolar doublets in itinerant and localized limits. In both limits, the resulting models are of surprisingly simple form. In… CONTINUE READING

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