Spin ordering and electronic texture in the bilayer iridate   Sr$_3$Ir$_2$O$_7$
  Through a neutron scattering, charge transport, and magnetization study, the correlated ground state in the bilayer iridium oxide Sr$_3$Ir$_2$O$_7$ is explored. Our combined results resolve scattering consistent with a high temperature magnetic phase that persists above 600 K, reorients at the previously defined $T_{AF}=280$ K, and coexists with an electronic ground state whose phase behavior suggests the formation of a fluctuating charge or orbital phase that freezes below $T^{*}\approx70$ K. Our study provides a window into the emergence of multiple electronic order parameters near the boundary of the metal to insulator phase transition of the 5d $J_{eff}=1/2$ Mott phase. 
Chetan Dhital, Sovit Khadka, Z. Yamani, Clarina de la Cruz, T. C.   Hogan, S. M. Disseler, Mani Pokharel, K. C. Lukas, Wei T...
cond-mat.str-el cond-mat.supr-con