Ordering of the pyrochlore Ising model with the long-range RKKY   interaction
  The ordering of the Ising model on a pyrochlore lattice interacting via the long-range RKKY interaction, which models a metallic pyrochlore magnet such as Pr_2Ir_2O_7, is studied by Monte Carlo simulations. Depending on the parameter k_F representing the Fermi wavevector, the model exhibits rich ordering behaviors. 
Atsushige Ikeda and Hikaru Kawamura