Atomic-scale control of magnetic anisotropy via novel spin-orbit coupling effect in La2/3Sr1/3MnO3/SrIrO3 superlattices

Abstract

Magnetic anisotropy (MA) is one of the most important material properties for modern spintronic devices. Conventional manipulation of the intrinsic MA, i.e. magnetocrystalline anisotropy (MCA), typically depends upon crystal symmetry. Extrinsic control over the MA is usually achieved by introducing shape anisotropy or exchange bias from another magnetically ordered material. Here we demonstrate a pathway to manipulate MA of 3d transition metal oxides (TMOs) by digitally inserting non-magnetic 5d TMOs with pronounced spin-orbit coupling (SOC). High quality superlattices comprised of ferromagnetic La2/3Sr1/3MnO3 (LSMO) and paramagnetic SrIrO3 (SIO) are synthesized with the precise control of thickness at atomic scale. Magnetic easy axis reorientation is observed by controlling the dimensionality of SIO, mediated through the emergence of a novel spin-orbit state within the nominally paramagnetic SIO.

arXiv commentProceedings of the National Academy of Sciences, May 2016

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• Two-dimensional $J_{\mathrm{eff}}$ = 1/2 antiferromagnetic insulator unraveled from interlayer exchange coupling in artificial perovskite iridate superlattices
• Correlation-driven eightfold magnetic anisotropy in a two-dimensional oxide monolayer
• Emergent electric field control of phase transformation in oxide superlattices
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• Synthesis and electronic properties of Ruddlesden-Popper strontium iridate epitaxial thin films stabilized by control of growth kinetics
• Growth and engineering of perovskite SrIrO3 thin films
• The Jeff=1/2 antiferromagnet Sr2IrO4: A golden avenue toward new physics and functions
• Tunable and Enhanced Rashba Spin-Orbit Coupling in Iridate-Manganite Heterostructures
• Novel spin-orbit coupling driven emergent states in iridate-based heterostructures
• Magnetism at iridate/manganite interface: influence of strong spin-orbit interaction
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• Effect of strain on magnetic and orbital ordering of LaSrCrO${}_3$/LaSrMnO${}_3$ heterostructures
• Tailoring magnetic order via atomically stacking 3d/5d electrons
• Quantum Anomalous Hall Effect by Coupling Heavy Atomic Layers with CrI${}_3$
• Low temperature ferromagnetism in perovskite SrIrO${}_3$ films
• Control of magnetic anisotropy by orbital hybridization in (La0.67Sr0.33MnO3)n/(SrTiO3)n superlattice
• Emergence of insulating ferrimagnetism and perpendicular magnetic anisotropy in 3d-5d perovskite oxide composite films for insulator spintronic
• Interfacial-hybridization-modified Ir Ferromagnetism and Electronic Structure in LaMnO${}_3$/SrIrO${}_3$ Superlattices
• Interfacial phase frustration stabilizes unconventional skyrmion crystals
• Isostructural Metal-Insulator Transition Driven by Dimensional-Crossover in SrIrO3 Heterostructures
• Spin mixing conductance and spin magnetoresistance of iridate/manganite interface
• Effects of Crystalline Disorder on Interfacial and Magnetic Properties of Sputtered Topological Insulator/Ferromagnet Heterostructures
• Lateral modulation of magnetic anisotropy in tricolor 3d-5d oxide superlattices
• Quasi-2D anomalous Hall Mott insulator of topologically engineered Jeff =1/2 electrons
• Dimensionality Engineering of Magnetic Anisotropy from Anomalous Hall Effect in Synthetic SrRuO3 Crystals
• Highly Tunable Perpendicular Magnetic Anisotropy and Anisotropic Magnetoresistance in Ru-doped La0.67Sr0.33MnO3 Epitaxial Films
• Tuning Structural, Transport and Magnetic Properties of Epitaxial SrRuO3 through Ba-Substitution
• The 3d and 5d electronic structures and orbital hybridization in Ba- and Ca-doped La2CoIrO6 double perovskite
• Interface-driven magnetic anisotropy in relaxed La${}_{0.7}$Sr${}_{0.3}$CrO${}_3$/La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$ heterostructures on MgO
• Incommensurate Spiral Spin Order in CaMn${}_2$Bi${}_2$ observed via High Pressure Neutron Diffraction
• Evolution of electronic and magnetic properties of Sr${}_2$IrO${}_4$ under strain
• Non-uniform magnetization profile in ferromagnetic heterostructures leading to topological Hall effect like signatures
• Giant anisotropic magnetoresistance with dual-four-fold symmetry in CaMnO3/CaIrO3 heterostructures