Dilute Magnetism and Spin-Orbital Percolation Effects in Rh-doped Sr2IrO4

Abstract

We have used a combination of resonant magnetic x-ray scattering (RMXS) and x-ray absorption spectroscopy (XAS) to investigate the properties of the doped spin-orbital Mott insulator Sr2Ir(1-x)Rh(x)O4 (0.07 < x < 0.70). We show that Sr2Ir(1-x)Rh(x)O4 represents a unique model system for the study of dilute magnetism in the presence of strong spin-orbit coupling, and provide evidence of a doping-induced change in magnetic structure and a suppression of magnetic order at x_c ~ 0.17. We demonstrate that Rh-doping introduces Rh3+/Ir5+ ions which effectively hole-dope this material. We propose that the magnetic phase diagram for this material can be understood in terms of a novel spin-orbital percolation picture.

9 pages, 7 figures

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• Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
• Twisted Hubbard Model for Sr2IrO4: Magnetism and Possible High Temperature Superconductivity
• Monte Carlo study of an unconventional superconducting phase in Ir-oxide J_{eff}=1/2 Mott insulators induced by carrier doping
• The magnetic and crystal structures of Sr2IrO4: A neutron diffraction study
• Dimensionality Driven Spin-Flop Transition in Layered Iridates
• Robustness of basal-plane antiferromagnetic order and the $J_{eff}=1/2$ state in single-layer iridate spin-orbit Mott insulators
• Spin-orbit tuned metal-insulator transitions in single-crystal Sr2Ir1-xRhxO4 (0\leqx\leq1)
• Dilution Effects in Two-dimensional Quantum Orbital System
• Dilution effect in correlated electron system with orbital degeneracy

Cited by in corpus (51)

• Evidence of an odd-parity hidden order in a spin-orbit coupled correlated iridate
• The Challenge of Spin-Orbit-Tuned Ground States in Iridates
• Signature of high temperature superconductivity in electron doped Sr2IrO4
• Square Lattice Iridates
• A structural distortion induced magneto-elastic locking in Sr${}_2$IrO${}_4$ revealed through nonlinear optical harmonic generation
• Tuning Magnetic Coupling in Sr${}_2$IrO${}_4$ Thin Films with Epitaxial Strain
• Time-reversal symmetry breaking hidden order in Sr${}_2$(Ir,Rh)O${}_4$
• Transfer of spectral weight across the gap of Sr2IrO4 induced by La doping
• Multipole superconductivity in nonsymmorphic Sr${}_2$IrO${}_4$
• Theoretical study of insulating mechanism in multi-orbital Hubbard models with a large spin-orbit coupling: Slater versus Mott scenario in Sr${}_2$IrO${}_4$
• Structure symmetry determination and magnetic evolution in $\mathrm{S}{\mathrm{r}}_2\mathrm{I}{\mathrm{r}}_{1-\mathrm{x}}\mathrm{R}{\mathrm{h}}_{\mathrm{x}}{\mathrm{O}}_4$
• Evolution of structure, magnetism and electronic transport in doped pyrochlore iridate Y${}_2$Ir${}_{2-x}$Ru${}_x$O${}_7$
• Evolution of competing magnetic order in the Jeff=1/2 insulating state of Sr2Ir1-xRuxO4
• The Jeff=1/2 antiferromagnet Sr2IrO4: A golden avenue toward new physics and functions
• Simple cubic random-site percolation thresholds for neighborhoods containing fourth-nearest neighbors
• From Jeff=1/2 insulator to p-wave superconductor in single-crystal Sr2Ir1-xRuxO4 (0 < x< 1)
• Electron and hole doping in the relativistic Mott insulator Sr${}_2$IrO${}_4$: a first-principles study using band unfolding technique
• Disorder induced power-law gaps in an insulator-metal Mott transition
• Effect of Cu${}^{2+}$ substitution in Spin-Orbit Coupled Sr${}_2$Ir${}_{1-x}$Cu${}_x$O${}_4$: Structure, magnetism and electronic properties
• Dual gate control of bulk transport and magnetism in the spin-orbit insulator Sr2IrO4
• Odd-parity multipole fluctuation and unconventional superconductivity in locally noncentrosymmetric crystal
• The magnetic ground state of Sr2IrO4 and implications for second-harmonic generation
• Charge partitioning and anomalous hole doping in Rh-doped Sr2IrO4
• Formation of an incoherent metallic state in Rh-doped Sr${}_2$IrO${}_4$
• Crystal field splitting in Sr${}_{n+1}$Ir${}_n$O${}_{3n+1}$ ($n$ = 1, 2) iridates probed by x-ray Raman spectroscopy
• Bond Directional Anapole Order in a Spin-Orbit Coupled Mott Insulator Sr${}_2$(Ir${}_{1-x}$Rh${}_x$)O${}_4$
• La-doping effect on spin-orbit coupled Sr2IrO4 probed by x-ray absorption spectroscopy
• ARPES study of orbital characters, symmetry breakings and pseudogaps in doped and pure Sr2IrO4
• Impurity-induced phonon thermal Hall effect in the antiferromagnetic phase of Sr2IrO4
• Spin-wave gap collapse in Rh-doped Sr2IrO4
• Evolution of structure and magnetism across the metal-insulator transition in the pyrochlore iridate $($Nd${}_{1-x}$Ca${}_x{)}_2$Ir${}_2$O${}_7$
• Odd-Parity Superconductivity Driven by Octahedra Rotations in Iridium Oxides
• Persistent large anisotropic magnetoresistance and insulator to metal transition in spin-orbit coupled antiferromagnets Sr2(Ir1-xGax)O4
• Magnetic excitations in hole-doped Sr2IrO4: A comparison with electron-doped cuprates
• Optical Signature of a Crossover from Mott- to Slater-type Gap in Sr${}_2$Ir${}_{1-x}$Rh${}_x$O${}_4$
• Structural and Magnetic Transitions in the Planar Antiferromagnet Ba${}_4$Ir${}_3$O${}_{10}$
• Origin of the different electronic structure of Rh- and Ru-doped Sr2IrO4
• Unusual slow magnetic fluctuations and critical slowing down in Sr${}_2$Ir${}_{1-x}$Rh${}_x$O${}_4$
• Giant Spin Gap and Magnon Localization in the Disordered Heisenberg Antiferromagnet Sr2Ir1-xRuxO4
• Strong anisotropy within a Heisenberg model in the J=1/2 insulating state of Sr2Ir0.8Ru0.2O4
• Doping driven structural distortion in the bilayer iridate (Sr${}_{1-x}$La${}_x$)${}_3$Ir${}_2$O${}_7$
• Magnetism and electrical transport in Y-doped layered iridate Sr${}_2$IrO${}_4$
• Electronic structure of the frustrated diamond lattice magnet NiRh${}_2$O${}_4$
• Coherent and incoherent bands in La and Rh doped Sr3Ir2O7
• Hallmarks of the Mott-Metal Crossover in the Hole Doped J=1/2 Mott insulator Sr2IrO4
• Evolution of electronic structure of Ru-doped single-crystal iridiates, Sr${}_2$Ir${}_{1-x}$Ru${}_x$O${}_4$
• Sr${}_3$Ir${}_2$O${}_7$F${}_2$: Topochemical conversion of a relativistic Mott state into a spin-orbit driven band insulator
• The "dark phase'' in Sr${}_2$Ir${}_{1-x}$Rh${}_x$O${}_4$ revealed by Seebeck and Hall measurements
• Quantum Criticality in a Layered Iridate
• Three-dimensional Stacking of Canted Antiferromagnetism and Pseudospin Current in Undoped Sr${}_2$IrO${}_4$: Symmetry Analysis and Microscopic Model Realization
• A critical point in Sr2-xIrO4 and less distorted IrO6 octahedra induced by deep Sr-vacancies