Spin ordering and electronic texture in the bilayer iridate Sr${}_3$Ir${}_2$O${}_7$

Abstract

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 $T^{\ast }\approx 70$ 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.

Revised text and figures. 4 pages, 4 figures

References in corpus (4)

• Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
• Bandwidth-Controlled Insulator-Metal Transition and Correlated Metallic State in 5$d$ Transition Metal Oxides Sr${}_{n+1}$Ir${}_n$O${}_{3n+1}$ ($n$=1, 2, and $\infty$)
• Twisted Hubbard Model for Sr2IrO4: Magnetism and Possible High Temperature Superconductivity
• Dimensionality Driven Spin-Flop Transition in Layered Iridates

Cited by in corpus (9)

• Neutron scattering study of correlated phase behavior in Sr2IrO4
• Crossover of conduction mechanism in Sr2IrO4 epitaxial thin films
• Spectroscopic evidence for negative electronic compressibility in a quasi-three-dimensional spin-orbit correlated metal
• Evidence of quantum dimer excitations in Sr${}_3$Ir${}_2$O${}_7$
• First-order melting of a weak spin-orbit Mott insulator into a correlated metal
• The J_{eff}=1/2 insulator Sr3Ir2O7 studied by means of angle-resolved photoemission spectroscopy
• Fermi Arcs vs. Fermi Pockets in Electron-doped Perovskite Iridates
• Spin correlated electronic state on the surface of a spin-orbit Mott system (Layered Iridates)
• Spin-orbit density wave: A new phase of matter applicable to the hidden order state of URu2Si2