All-in-all-Out Magnetic Order and Propagating Spin Waves in Sm_{2}Ir_{2}O_{7}.

  title={All-in-all-Out Magnetic Order and Propagating Spin Waves in Sm_\{2\}Ir_\{2\}O_\{7\}.},
  author={C. Donnerer and M Rahn and Marco Moretti Sala and James G. Vale and Davide Pincini and Joerg Strempfer and Michael Krisch and Dharmalingam Prabhakaran and Andrew T. Boothroyd and Desmond F McMorrow},
  journal={Physical review letters},
  volume={117 3},
Using resonant magnetic x-ray scattering we address the unresolved nature of the magnetic ground state and the low-energy effective Hamiltonian of Sm_{2}Ir_{2}O_{7}, a prototypical pyrochlore iridate with a finite temperature metal-insulator transition. Through a combination of elastic and inelastic measurements, we show that the magnetic ground state is an all-in-all-out (AIAO) antiferromagnet. The magnon dispersion indicates significant electronic correlations and can be well described by a… CONTINUE READING