Neutron scattering study of correlated phase behavior in Sr2IrO4

Abstract

Neutron diffraction measurements are presented exploring the magnetic and structural phase behaviors of the candidate J${}_{eff}=1/2$ Mott insulating iridate Sr${}_2$IrO${}_4$. Comparisons are drawn between the correlated magnetism in this single layer system and its bilayer analog Sr${}_3$Ir${}_2$O${}_7$ where both materials exhibit magnetic domains originating from crystallographic twinning and comparable moment sizes. Weakly temperature dependent superlattice peaks violating the reported tetragonal space group of Sr${}_2$IrO${}_4$ are observed supporting the notion of a lower structural symmetry arising from a high temperature lattice distortion, and we use this to argue that moments orient along a unique in-plane axis demonstrating an orthorhombic symmetry in the resulting spin structure. Our results demonstrate that the correlated spin order and structural phase behaviors in both single and bilayer Sr${}_{n+1}$Ir${}_n$O${}_{3n+1}$ systems are remarkably similar and suggest comparable correlation strengths in each system.

6 pages, 4 figures

References in corpus (10)

• 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 $\infty$)
• Spin-Orbit Coupling in Iridium-Based 5d Compounds Probed by X-ray Absorption Spectroscopy
• Two-dimensional Heisenberg behavior of Jeff = 1/2 isospins in the paramagnetic state of spin-orbital Mott insulator Sr2IrO4
• Spin-Orbit Integrated Ground State and Magnetic Anisotropy in Sr${}_2$IrO${}_4$
• Dimensionality Driven Spin-Flop Transition in Layered Iridates
• Antiferromagnetic order and domains in Sr3Ir2O7 probed by x-ray resonant scattering
• Weak antiferromagnetism of J_eff=1/2 band in bilayer iridate Sr3Ir2O7
• Spin ordering and electronic texture in the bilayer iridate Sr${}_3$Ir${}_2$O${}_7$
• Microscopic theory of magnetism in Sr3Ir2O7

Cited by in corpus (67)

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• Evidence of an odd-parity hidden order in a spin-orbit coupled correlated iridate
• The influence of electron-doping on the ground state of (Sr{1-x}La{x})2IrO4
• Slaving of the magnetic moment canting to the correlated oxygen rotation in Sr2IrO4 revealed by X-ray resonant scattering
• Square Lattice Iridates
• A structural distortion induced magneto-elastic locking in Sr${}_2$IrO${}_4$ revealed through nonlinear optical harmonic generation
• Pseudo Jahn-Teller Effect and Magnetoelastic Coupling in Spin-Orbit Mott Insulators
• Giant anisotropic magnetoresistance and nonvolatile memory in canted antiferromagnet Sr2IrO4
• 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${}_4$
• Pseudospin-lattice coupling in the spin-orbit Mott insulator Sr2IrO4
• Multipole superconductivity in nonsymmorphic Sr${}_2$IrO${}_4$
• Relativistic $GW$+BSE study of the optical properties of Ruddlesden-Popper iridates
• Anisotropic magnetoresistance in antiferromagnetic Sr2IrO4
• Structure symmetry determination and magnetic evolution in $\mathrm{S}{\mathrm{r}}_2\mathrm{I}{\mathrm{r}}_{1-\mathrm{x}}\mathrm{R}{\mathrm{h}}_{\mathrm{x}}{\mathrm{O}}_4$
• The importance of XY anisotropy in Sr2IrO4 revealed by magnetic critical scattering experiments
• A weakly correlated Fermi liquid state with a small Fermi surface in lightly doped Sr${}_3$Ir${}_2$O${}_7$
• Revealing Controllable Anisotropic Magnetoresistance in Spin Orbit Coupled Antiferromagnet Sr2IrO4
• Structural investigation of the bilayer iridate Sr3Ir2O7
• Isotropic and Anisotropic Regimes of the Field-Dependent Spin Dynamics in Sr2IrO4: Raman Scattering Studies
• Spin and Orbital Contributions to Magnetically Ordered Moments in 5d Layered Perovskite Sr2IrO4
• Evolution of competing magnetic order in the Jeff=1/2 insulating state of Sr2Ir1-xRuxO4
• Unidirectional spin density wave state in metallic (Sr1-xLax)2IrO4
• The Jeff=1/2 antiferromagnet Sr2IrO4: A golden avenue toward new physics and functions
• Anisotropic exchange and spin-wave damping in pure and electron-doped Sr${}_2$IrO${}_4$
• Correlation effects and hidden spin-orbit entangled electronic order in parent and electron-doped iridates Sr${}_2$IrO${}_4$
• First-Principles Calculation of Spin and Orbital Contributions to Magnetically Ordered Moments in Sr${}_2$IrO${}_4$
• A Low Temperature Nonlinear Optical Rotational Anisotropy Spectrometer for the Determination of Crystallographic and Electronic Symmetries
• Antiferromagnet-based spintronic functionality by controlling isospin domains in a layered perovskite iridate
• Spectral functions of Sr${}_2$IrO${}_4$: theory versus experiment
• Odd-parity multipole fluctuation and unconventional superconductivity in locally noncentrosymmetric crystal
• Jeff=1/2 Mott spin-orbit insulating state close to the cubic limit in Ca4IrO6
• The magnetic ground state of Sr2IrO4 and implications for second-harmonic generation
• Model analysis of magnetic susceptibility of Sr${}_2$IrO${}_4$ - 2D $J_{\mathrm{eff}}$ = 1/2 Heisenberg system with competing interlayer couplings
• Formation of an incoherent metallic state in Rh-doped Sr${}_2$IrO${}_4$
• Spin-orbit-enhanced magnetic surface second-harmonic generation in Sr${}_2$IrO${}_4$
• Bond Directional Anapole Order in a Spin-Orbit Coupled Mott Insulator Sr${}_2$(Ir${}_{1-x}$Rh${}_x$)O${}_4$
• Spin-gap and two-dimensional magnetic excitations in Sr2IrO4
• Insulating phase in Sr${}_2$IrO${}_4$: An investigation using critical analysis and magnetocaloric effect
• Photocurrent response in parity-time symmetric current-ordered states
• Magnetization density distribution of Sr${}_2$IrO${}_4$: Deviation from a local $j_{\text{eff}}=1/2$ picture
• Structural evolution and electronic properties of (Sr1-xCax)2-yIrO4+z spin-orbit assisted insulators
• High-energy electronic excitations in Sr${}_2$IrO${}_4$ observed by Raman scattering
• Pseudospin-lattice coupling and electric control of the square-lattice iridate Sr2IrO4
• Structural and Magnetic Transitions in the Planar Antiferromagnet Ba${}_4$Ir${}_3$O${}_{10}$
• Unusual slow magnetic fluctuations and critical slowing down in Sr${}_2$Ir${}_{1-x}$Rh${}_x$O${}_4$
• Magnetic excitation in resonant inelastic x-ray scattering of Sr${}_2$IrO${}_4$: A localized spin picture
• Compass Impurity Model of Tb Substitution in Sr2IrO4
• Strain tuned magnetotransport of Jeff=1/2 antiferromagnetic Sr2IrO4 thin films
• Direct observation of oxygen polarization in Sr${}_2$IrO${}_4$ by O $K$-edge x-ray magnetic circular dichroism
• Momentum-resolved lattice dynamics of parent and electron-doped Sr${}_2$IrO${}_4$
• Doping driven structural distortion in the bilayer iridate (Sr${}_{1-x}$La${}_x$)${}_3$Ir${}_2$O${}_7$
• Anisotropic antiferromagnetic order in spin-orbit coupled trigonal lattice Ca2Sr2IrO6
• Coherent and incoherent bands in La and Rh doped Sr3Ir2O7
• Precise control of $J_{\mathrm{eff}}=1/2$ magnetic properties in Sr${}_2$IrO${}_4$ epitaxial thin films by variation of strain and thin film thickness
• Emergent interlayer magnetic order via strain-induced orthorhombic distortion in the 5d Mott insulator Sr2IrO4
• Band unfolding with a general transformation matrix: from code implementation to interpretation of photoemission spectra
• Single crystal growth of iridates without platinum impurities
• Electron doping in ${\text{Sr}}_3{\text{Ir}}_2{\text{O}}_7$: collapse of band gap and magnetic order
• Critical fluctuations in the spin-orbit Mott insulator Sr${}_3$Ir${}_2$O${}_7$
• Anisotropy of Antiferromagnetic Domains in a Spin-orbit Mott Insulator
• Evolution of the spectral lineshape at the magnetic transition in Sr2IrO4 and Sr3Ir2O7
• High-pressure floating zone crystal growth of Sr${}_2$IrO${}_4$
• Three-dimensional Stacking of Canted Antiferromagnetism and Pseudospin Current in Undoped Sr${}_2$IrO${}_4$: Symmetry Analysis and Microscopic Model Realization
• Microscopic model realization of $\mathbf{d}$-wave pseudospin current order in Sr${}_2$IrO${}_4$