Lattice-Driven Magnetoresistivity and Metal-Insulator Transition in Single-Layered Iridates

Abstract

Sr2IrO4 exhibits a novel insulating state driven by spin-orbit interactions. We report two novel phenomena, namely a large magnetoresistivity in Sr2IrO4 that is extremely sensitive to the orientation of magnetic field but exhibits no apparent correlation with the magnetization, and a robust metallic state that is induced by dilute electron (La3+) or hole (K+) doping for Sr2+ ions in Sr2IrO4. Our structural, transport and magnetic data reveal that a strong spin-orbit interaction alters the balance between the competing energies so profoundly that (1) the spin degree of freedom alone is no longer a dominant force; (2) underlying transport properties delicately hinge on the Ir-O-Ir bond angle via a strong magnetoelastic coupling; and (3) a highly insulating state in Sr2IrO4 is proximate to a metallic state, and the transition is governed by lattice distortions. This work suggests that a novel class of lattice-driven electronic materials can be developed for applications.

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References in corpus (10)

• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
• Spin-Liquid State in the S = 1/2 Hyperkagome Antiferromagnet Na4Ir3O8
• 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
• Quantum spin Hall effect in a transition metal oxide Na2IrO3
• Metamagnetic transition in EuFe${}_2$As${}_2$ single crystals
• Non-Fermi-liquid behavior in nearly ferromagnetic metallic SrIrO3 single crystals
• Measurement of the internal magnetic field in the correlated iridates Ca${}_4$IrO${}_6$, Ca${}_5$Ir${}_3$O${}_{12}$, Sr${}_3$Ir${}_2$O${}_7$ and Sr${}_2$IrO${}_4$

Cited by in corpus (115)

• Spin-Orbit Physics Giving Rise to Novel Phases in Correlated Systems: Iridates and Related Materials
• Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
• Isospin Dynamics in Sr2IrO4 : Forging Links to Cuprate Superconductivity
• Direct evidence of a zigzag spin chain structure in the honeycomb lattice: A neutron and x-ray diffraction investigation on single crystal $\mathrm{N}{\mathrm{a}}_2\mathrm{Ir}{\mathrm{O}}_3$
• Fermi Arcs in a Doped Pseudospin-1/2 Heisenberg Antiferromagnet
• Spin-Orbit Coupling in Iridium-Based 5d Compounds Probed by X-ray Absorption Spectroscopy
• The magnetic and crystal structures of Sr2IrO4: A neutron diffraction study
• The Challenge of Spin-Orbit-Tuned Ground States in Iridates
• Collapse of the Mott gap and emergence of a nodal liquid in lightly doped Sr${}_2$IrO${}_4$
• Novel magnetism of Ir5+ ions in the double perovskite Sr2YIrO6
• Emerging magnetism and anomalous Hall effect in iridate-manganite heterostructures
• Spin-orbit tuned metal-insulator transitions in single-crystal Sr2Ir1-xRhxO4 (0\leqx\leq1)
• 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
• Dilute Magnetism and Spin-Orbital Percolation Effects in Rh-doped Sr2IrO4
• Persistent paramagnons deep in the metallic phase of Sr${}_{2-x}$La${}_x$IrO${}_4$
• Dimensionality controlled Mott transition and correlation effects in single- and bi-layer perovskite iridates
• Giant anisotropic magnetoresistance and nonvolatile memory in canted antiferromagnet Sr2IrO4
• Epitaxy-distorted spin-orbit Mott insulator in Sr2IrO4 thin films
• Crossover of conduction mechanism in Sr2IrO4 epitaxial thin films
• Two-dimensional $J_{\mathrm{eff}}$ = 1/2 antiferromagnetic insulator unraveled from interlayer exchange coupling in artificial perovskite iridate superlattices
• Local density of states study of a spin-orbit-coupling induced Mott insulator Sr${}_2$IrO${}_4$
• Transfer of spectral weight across the gap of Sr2IrO4 induced by La doping
• The iridium double perovskite Sr2YIrO6 revisited: A combined structural and specific heat study
• Tuning Jeff = 1/2 Insulating State via Electron Doping and Pressure in Double-Layered Iridate Sr3Ir2O7
• Strong magnetic instability in correlated metal Bi2Ir2O7
• Confinement-Deconfinement Transition as an Indication of Spin-Liquid-Type Behavior in Na${}_2$IrO${}_3$
• Evidence of quantum dimer excitations in Sr${}_3$Ir${}_2$O${}_7$
• Slater Insulator in Iridate Perovskites with Strong Spin-Orbit Coupling
• Carrier localization and electronic phase separation in a doped spin-orbit driven Mott phase in Sr3(Ir1-xRux)2O7
• Persistent non-metallic behavior in Sr2IrO4 and Sr3Ir2O7 at high pressures
• Anisotropic magnetoresistance in antiferromagnetic Sr2IrO4
• Structure symmetry determination and magnetic evolution in $\mathrm{S}{\mathrm{r}}_2\mathrm{I}{\mathrm{r}}_{1-\mathrm{x}}\mathrm{R}{\mathrm{h}}_{\mathrm{x}}{\mathrm{O}}_4$
• Decoupling of the Antiferromagnetic and Insulating States in Tb doped Sr2IrO4
• Crystal growth and intrinsic magnetic behavior of Sr${}_2$IrO${}_4$
• Magnetic structural change of Sr2IrO4 upon Mn doping
• The electronic structure of the high-symmetry perovskite iridate Ba2IrO4
• Temperature evolution of magnetic and transport behavior in 5\textit{d} Mott insulator Sr${}_2$IrO${}_4$: Significance of magneto-structural coupling
• Electrical Control of Structural and Physical Properties via Strong Spin-Orbit Interactions in Sr2IrO4
• Strain-engineering of the charge and spin-orbital interactions in Sr2IrO4
• Isotropic and Anisotropic Regimes of the Field-Dependent Spin Dynamics in Sr2IrO4: Raman Scattering Studies
• Revealing Controllable Anisotropic Magnetoresistance in Spin Orbit Coupled Antiferromagnet Sr2IrO4
• Synthesis and electronic properties of Ruddlesden-Popper strontium iridate epitaxial thin films stabilized by control of growth kinetics
• Structural, Magnetic, and Electrical Properties of Li2Ir1-xRuxO3
• Unidirectional spin density wave state in metallic (Sr1-xLax)2IrO4
• The Jeff=1/2 antiferromagnet Sr2IrO4: A golden avenue toward new physics and functions
• Electron and hole doping in the relativistic Mott insulator Sr${}_2$IrO${}_4$: a first-principles study using band unfolding technique
• Doping Evolution of Magnetic Order and Magnetic Excitations in (Sr${}_{1-x}$La${}_x$)${}_3$Ir${}_2$O${}_7$
• From Jeff=1/2 insulator to p-wave superconductor in single-crystal Sr2Ir1-xRuxO4 (0 < x< 1)
• Poor electronic screening in lightly doped Mott insulators observed with scanning tunneling microscopy
• First-Principles Calculation of Spin and Orbital Contributions to Magnetically Ordered Moments in Sr${}_2$IrO${}_4$
• Novel spin-orbit coupling driven emergent states in iridate-based heterostructures
• Anisotropic softening of magnetic excitations in lightly electron doped Sr${}_2$IrO${}_4$
• Spectral functions of Sr${}_2$IrO${}_4$: theory versus experiment
• Dual gate control of bulk transport and magnetism in the spin-orbit insulator Sr2IrO4
• Atomic-scale fragmentation and collapse of antiferromagnetic order in a doped Mott insulator
• Microscopic theory of magnetism in Sr3Ir2O7
• Anisotropic electronic properties of a-axis-oriented Sr2IrO4 epitaxial thin-films
• Possible quantum paramagnetism in compressed Sr${}_2$IrO${}_4$
• Electronic Structure and Magnetic Properties of Iridate Superlattice SrIrO${}_3$/SrTiO${}_3$
• Giant reversible nanoscale piezoresistance at room temperature in Sr2IrO4 thin films
• Direct observation of the Mott gap in strontium iridate with a scanning tunneling microscope
• 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
• Lattice frustration in spin-orbit Mott insulator Sr3Ir2O7 at high pressure
• Observation of metallic surface states in the strongly correlated Kitaev-Heisenberg candidate Na2IrO3
• Epitaxial Ba2IrO4 thin-films grown on SrTiO3 substrates by pulsed laser deposition
• Non-local Coulomb correlations in pure and electron-doped ${\mathrm{Sr}}_2{\mathrm{IrO}}_4$: spectral functions, Fermi surface and pseudogap-like spectral weight distributions from oriented cluster dynamical mean field theory
• Optical Signatures of Spin-Orbit Exciton in Bandwidth Controlled Sr${}_2$IrO${}_4$ Epitaxial Films via High-Concentration Ca and Ba Doping
• Electrically Tunable Band Gap in Antiferromagnetic Mott Insulator Sr2IrO4
• Comprehensive Control of Metamagnetic Transition of Antiferromagnetic Mott Insulator Sr2IrO4 by in-situ Anisotropic Strain
• Anomalous Magnetoresistance due to Longitudinal Spin Fluctuations in a Jeff = 1/2 Mott Semiconductor
• Structural evolution and electronic properties of (Sr1-xCax)2-yIrO4+z spin-orbit assisted insulators
• Tuning the electronic structure of Sr2IrO4 thin films by bulk electronic doping using molecular beam epitaxy
• Effective Carrier Doping and Metallization in LaxSr2-x-yBayIrO4-delta Thin Films
• Persistent large anisotropic magnetoresistance and insulator to metal transition in spin-orbit coupled antiferromagnets Sr2(Ir1-xGax)O4
• Quest for New Quantum States via Field-Editing Technology
• Odd-Parity Superconductivity Driven by Octahedra Rotations in Iridium Oxides
• Light-induced insulator-metal transition in Sr${}_2$IrO${}_4$ reveals the nature of the insulating ground state
• Pseudospin-lattice coupling and electric control of the square-lattice iridate Sr2IrO4
• Controllable emergent spatial spin modulation in Sr2IrO4 by in situ shear strain
• Isospin-phonon coupling and Fano-interference in spin-orbit Mott insulator Sr2IrO4
• Towards Electrical-Current Control of Quantum States in Spin-Orbit-Coupled Matter
• Crystal structure and physical properties of the Sr-vacant spin-orbit-coupling induced Mott insulator Sr2-xIrO4
• Origin of the different electronic structure of Rh- and Ru-doped Sr2IrO4
• The origin of exciton mass in a frustrated Mott insulator Na${}_2$IrO${}_3$
• Metal-Insulator Transitions and non-Fermi Liquid Behaviors in 5d Perovskite Iridates
• 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
• Magnetism and electrical transport in Y-doped layered iridate Sr${}_2$IrO${}_4$
• Decoupling of magnetism and electric transport in single-crystal (Sr1-xAx)2IrO4 (A = Ca or Ba)
• Insight into the magnetic behavior of Sr${}_2$IrO${}_4$:A spontaneous magnetization study
• Emergent interlayer magnetic order via strain-induced orthorhombic distortion in the 5d Mott insulator Sr2IrO4
• Hallmarks of the Mott-Metal Crossover in the Hole Doped J=1/2 Mott insulator Sr2IrO4
• 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
• Single crystal growth of iridates without platinum impurities
• Electronic and optical properties of La-doped Sr${}_3$Ir${}_2$O${}_7$ epitaxial thin-films
• Electrochemical Oxygen Intercalation into Sr${}_2$IrO${}_4$
• Tuning the structural, electronic and magneto-transport properties of spin-orbit Mott insulator Sr2IrO4
• Evidence of Slater-type mechanism as origin of insulating state in Sr2IrO4
• Stability of the Antiferromagnetic State in the Electron Doped Iridates
• Epitaxial growth and antiferromagnetism of Sn-substituted perovskite iridate SrIr${}_{0.8}$Sn${}_{0.2}$O${}_3$
• Quantum Criticality in a Layered Iridate
• Evolution of the spectral lineshape at the magnetic transition in Sr2IrO4 and Sr3Ir2O7
• The "dark phase'' in Sr${}_2$Ir${}_{1-x}$Rh${}_x$O${}_4$ revealed by Seebeck and Hall measurements
• Enhanced Magnetism and Phase Transitions in Ultrathin Quantum Spin Liquid Na2IrO3 Flakes
• Putative magnetic quantum criticality in (Sr${}_{\text{1-x}}$La${}_{\text{x}}$)${}_{\text{3}}$Ir${}_{\text{2}}$O${}_{\text{7}}$
• Three-dimensional Stacking of Canted Antiferromagnetism and Pseudospin Current in Undoped Sr${}_2$IrO${}_4$: Symmetry Analysis and Microscopic Model Realization
• Structural origin of the Jeff=1/2 antiferromagnetic phase in Ga-doped Sr2IrO4
• Fortuitous partners of antiferromagnetic and Mott states in spin-orbit-coupled Sr2IrO4: A study of Sr2Ir1-xMxO4 (M=Fe or Co)
• Mixed-pairing superconductivity in 5d Mott insulators with antisymmetric exchange
• Insulator-metal transition in deep Sr-vacant spin-orbit Mott insulator Sr2IrO4
• Two dimensional electron gas in the $\delta$-doped iridates with strong spin-orbit coupling: La${}_{\delta }$Sr${}_2$IrO${}_4$