Engineering spin-orbital magnetic insulator by tailoring superlattices

Abstract

Novel interplay of spin-orbit coupling and electron correlations in complex Ir oxides recently emerged as a new paradigm for correlated electron physics. Because of a large spin-orbit coupling of ~0.5 eV, which is comparable to the transfer energy t and the crystal field splitting $\Delta$ and Coulomb U, a variety of ground states including magnetic insulator, band insulator, semimetal and metal, shows up in a narrow materials phase space. Utilizing such subtle competition of the ground states, we successfully tailor a spin-orbital magnetic insulator out of a semimetal SrIrO${}_3$ by controlling dimensionality using superlattice of [(SrIrO${}_3$)${}_m$, SrTiO${}_3$] and show that a magnetic ordering triggers the transition to magnetic insulator. Those results can be described well by a first-principles calculation. This study is an important step towards the design and the realization of topological phases in complex Ir oxides with very strong spin-orbit coupling.

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• Topological phases in Iridium oxide superlattices: quantized anomalous charge or valley Hall insulators
• Topological Crystalline Metal in Orthorhombic Perovskite Iridates

Cited by in corpus (80)

• Spin-Orbit Physics Giving Rise to Novel Phases in Correlated Systems: Iridates and Related Materials
• Topological Phases in Two-Dimensional Materials: A Brief Review
• Interface-driven topological Hall effect in SrRuO${}_3$-SrIrO${}_3$ bilayer
• Topological semimetals with Riemann surface states
• The Challenge of Spin-Orbit-Tuned Ground States in Iridates
• Electric-field control of anomalous and topological Hall effects in oxide bilayer thin films
• Emerging magnetism and anomalous Hall effect in iridate-manganite heterostructures
• Atomic-scale control of magnetic anisotropy via novel spin-orbit coupling effect in La2/3Sr1/3MnO3/SrIrO3 superlattices
• Spin-orbit-entangled electronic phases in 4$d$ and 5$d$ transition-metal compounds
• Anisotropic spin-orbit torque generation in epitaxial SrIrO3 by symmetry design
• Band alignment and charge transfer in complex oxide interfaces
• Spin-orbit semimetal SrIrO${}_3$ in the two-dimensional limit
• Dimensionality-driven metal-insulator-transition in spin-orbit coupled SrIrO${}_3$
• Chiral Ordering Spin Associated Glass like State in SrRuO3SrIrO3 Superlattice
• Quantum materials for energy-efficient neuromorphic computing
• Quantum-Matter Heterostructures
• Charge transfer driven emergent phenomena in oxide heterostructures
• Two-dimensional $J_{\mathrm{eff}}$ = 1/2 antiferromagnetic insulator unraveled from interlayer exchange coupling in artificial perovskite iridate superlattices
• Charge transfer in iridate-manganite superlattices
• Correlation-driven eightfold magnetic anisotropy in a two-dimensional oxide monolayer
• New Evidence for a Low-Temperature Magnetic Ground State in Double-Perovskite Iridates with Ir5+(5d4) Ions
• Giant magnetic response of a two-dimensional antiferromagnet
• Epitaxial growth and thermodynamic stability of SrIrO3/SrTiO3 heterostructures
• Slater Insulator in Iridate Perovskites with Strong Spin-Orbit Coupling
• Review of Spin Orbit Coupled Semimetal SrIrO3 in thin film form
• Dimensionality-strain phase diagram of strontium iridates
• Revealing Controllable Anisotropic Magnetoresistance in Spin Orbit Coupled Antiferromagnet Sr2IrO4
• Balanced electron-hole transport in spin-orbit semimetal SrIrO3 heterostructures
• Growth and engineering of perovskite SrIrO3 thin films
• Synthesis and electronic properties of Ruddlesden-Popper strontium iridate epitaxial thin films stabilized by control of growth kinetics
• Dispersive Magnetic and Electronic Excitations in Iridate Perovskites Probed with Oxygen $K$-Edge Resonant Inelastic X-ray Scattering
• The Jeff=1/2 antiferromagnet Sr2IrO4: A golden avenue toward new physics and functions
• Doping Evolution of Magnetic Order and Magnetic Excitations in (Sr${}_{1-x}$La${}_x$)${}_3$Ir${}_2$O${}_7$
• All-in-all-out magnetic domain wall conduction in pyrochlore iridate heterointerface
• Novel spin-orbit coupling driven emergent states in iridate-based heterostructures
• Spin-orbit torque generation in NiFe/IrO2 bilayers
• Decoupling carrier concentration and electron-phonon coupling in oxide heterostructures observed with resonant inelastic x-ray scattering
• Magnetism at iridate/manganite interface: influence of strong spin-orbit interaction
• Coupling lattice instabilities across the interface in ultrathin oxide heterostructures
• Semimetallic transport properties of epitaxially stabilized perovskite CaIrO3 films
• Correlated Quantum Phenomena of Spin-Orbit Coupled Perovskite Oxide Heterostructures: Cases of SrRuO3 and SrIrO3-Based Artificial Superlattices
• Strange semimetal dynamics in SrIrO${}_3$
• Spontaneous Hall Effect enhanced by local Ir moments in epitaxial Pr${}_2$Ir${}_2$O${}_7$ thin films
• Substrate-tuning of correlated spin-orbit oxides
• Strain-modulated Slater-Mott crossover of pseudospin-half square-lattice in (SrIrO3)1/ (SrTiO3)1 superlattices
• Perovskite oxide heterojunction for Rashba-Dresselhaus assisted antiferromagnetic spintronics
• Three-dimensional electronic structures and the metal-insulator transition in Ruddlesden-Popper iridates
• Low temperature ferromagnetism in perovskite SrIrO${}_3$ films
• Anomalous Magnetoresistance due to Longitudinal Spin Fluctuations in a Jeff = 1/2 Mott Semiconductor
• Monoclinic SrIrO${}_3$ - A Dirac semimetal produced by non-symmorphic symmetry and spin-orbit coupling
• Signature of band inversion in the perovskite thin-film alloys BaSn${}_{1-x}$Pb${}_x$O${}_3$
• Interfacial-hybridization-modified Ir Ferromagnetism and Electronic Structure in LaMnO${}_3$/SrIrO${}_3$ Superlattices
• Odd-Parity Superconductivity Driven by Octahedra Rotations in Iridium Oxides
• Magnetic excitations in double perovskite iridates La${}_2$$M$IrO${}_6$ ($M$ = Co, Ni, and Zn) mediated by 3$d$-5$d$ hybridization
• Helical Majorana fermions at the interface of Weyl semimetal and d-wave superconductor: Application to Iridates and high-Tc Cuprates
• Isostructural Metal-Insulator Transition Driven by Dimensional-Crossover in SrIrO3 Heterostructures
• Simultaneous Metal-Insulator and Antiferromagnetic Transitions in Orthorhombic Perovskite Iridate Sr0.94Ir0.78O2.68 Single Crystals
• Spin-orbit torque generation in bilayers composed of CoFeB and epitaxial SrIrO${}_3$ grown on an orthorhombic DyScO${}_3$ substrate
• Octahedral tilting induced isospin reorientation transition in iridate heterostructures
• Angular dependence of Hall effect and magnetoresistance in SrRuO${}_3$-SrIrO${}_3$ heterostructures
• Spin current generation from an epitaxial tungsten dioxide WO${}_2$
• Magnetotransport of SrIrO3 films on (110) DyScO3
• Emergent Magnetism at the 3$d$-5$d$ Interface: SrMnO${}_3/$SrIrO${}_3$
• Quasi-2D anomalous Hall Mott insulator of topologically engineered Jeff =1/2 electrons
• Evidence for weak antilocalization-weak localization crossover and metal-insulator transition in CaCu${}_3$Ru${}_4$O${}_{12}$ thin films
• Reconciling monolayer and bilayer $J_{\mathrm{eff}}=1/2$ square lattices in hybrid oxide superlattice
• Selective Phonon Damping in Topological Semimetals
• Hidden structural transition in epitaxial Ca${}_{0.5}$Sr${}_{0.5}$IrO${}_3$/SrTiO${}_3$ thin film
• Inducing ferromagnetism by structural engineering in a strongly spin-orbit coupled oxide
• Sr${}_3$Ir${}_2$O${}_7$F${}_2$: Topochemical conversion of a relativistic Mott state into a spin-orbit driven band insulator
• Topological Crystalline Metal in Orthorhombic Perovskite Iridates
• Emergent topological states via digital (001) oxide superlattices
• Exotic magnetic anisotropy near digitized dimensional Mott boundary
• Coexistence of insulator-like paramagnon and metallic spin-orbit exciton modes in SrIrO${}_3$
• Magnetism in artificial Ruddlesden-Popper iridates leveraged by structural distortions
• Outstanding TC Enhancement in 5d-3d Y2NiIrO6 by Compression
• Asymmetric magnetoresistance in 3$d$-5$d$ based La${}_{0.67}$Ca${}_{0.33}$MnO${}_3$/SrIrO${}_3$ bilayer: The role of unidirectional anisotropy
• Two dimensional electron gas in the $\delta$-doped iridates with strong spin-orbit coupling: La${}_{\delta }$Sr${}_2$IrO${}_4$
• Electric field tuning of the anomalous Hall effect at oxide interfaces
• Giant anisotropic magnetoresistance with dual-four-fold symmetry in CaMnO3/CaIrO3 heterostructures