Electric-field control of anomalous and topological Hall effects in oxide bilayer thin films

Abstract

One of the key technologies in spintronics is to tame spin-orbit coupling (SOC) that links spin and motion of electrons, giving rise to intriguing magneto-transport properties in itinerant magnets. Prominent examples of such SOC-based phenomena are anomalous and topological Hall effects. However, controlling them by electric field has remained unachieved since electric field tends to be screened in itinerant magnets. Here we demonstrate that both anomalous and topological Hall effects can be modulated by electric field in oxide heterostructures consisting of ferromagnetic SrRuO${}_3$ and nonmagnetic SrIrO${}_3$. We observed clear electric-field effect only when SrIrO${}_3$ is inserted between SrRuO${}_3$ and a gate dielectric. Our results establish that strong SOC of nonmagnetic materials such as SrIrO${}_3$ is essential in electrical tuning of these Hall effects and possibly other SOC-related phenomena.

arXiv comment23 pages, 4 figures; revised version has been published in Nat. Commun. 9, 213 (2018)

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• Berry phase engineering at oxide interfaces
• Interpretation of experimental evidence of the topological Hall effect
• Two-channel anomalous Hall effect in SrRuO3
• Quantum materials for energy-efficient neuromorphic computing
• Noncollinear Spintronics and Electric-Field Control: A Review
• The chiral Hall effect of magnetic skyrmions from a cyclic cohomology approach
• Oxygen-Octahedral-Tilting-Driven Topological Hall Effect in Ultrathin SrRuO3 Films
• Tailoring Magnetism in Self-intercalated Cr1+δTe2 Epitaxial Films
• Tailoring Dzyaloshinskii-Moriya interaction in a transition metal dichalcogenide by dual-intercalation
• Distinguishing two-component anomalous Hall effect from topological Hall effect
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• Coexistence of surface and bulk ferromagnetism mimics skyrmion Hall effect in a topological insulator
• Inhomogeneous ferromagnetism mimics signatures of the topological Hall effect in SrRuO${}_3$ films
• Coupling charge and topological reconstructions at polar oxide interfaces
• Gradient-induced Dzyaloshinskii-Moriya interaction
• Topological Hall effect in single thick SrRuO3 layers induced by defect engineering
• Large anisotropic topological Hall effect in a hexagonal non-collinear magnet Fe5Sn3
• Topological Properties and Functionalities in Oxide Thin Films and Interfaces
• Berry phase manipulation in ultrathin SrRuO${}_3$ films
• The dynamics of local magnetic moments induced by itinerant Weyl electrons
• Pressure tuning of the anomalous Hall effect in the chiral antiferromagnet Mn3Ge
• Materials challenges for SrRuO3: from conventional to quantum electronics
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• Robust skyrmion-bubble textures in SrRuO${}_3$ thin films stabilized by magnetic anisotropy
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• Quantum field theory of topological spin dynamics
• Advances in Complex Oxide Quantum Materials Through New Approaches to Molecular Beam Epitaxy
• Perovskite oxide heterojunction for Rashba-Dresselhaus assisted antiferromagnetic spintronics
• Abrupt Enhancement of Spin-Orbit Scattering Time in Ultrathin Semimetallic SrIrO${}_3$ Close to the Metal-Insulator Transition
• Giant magnetoresistance, Fermi surface topology, Shoenberg effect and vanishing quantum oscillations in type-II Dirac semimetal candidates MoSi${}_2$ and WSi${}_2$
• Boundary twists, instabilities, and creation of skyrmions and antiskyrmions
• Detection of the Chiral Spin Structure in Ferromagnetic SrRuO${}_3$ Thin Film
• Domain wall skew scattering in ferromagnetic Weyl metals
• Anomalous Kerr Effect in SrRuO${}_3$ Thin Films
• Capping and gate control of anomalous Hall effect and hump structure in ultra-thin SrRuO${}_3$ films
• Soft-magnetic skyrmions induced by surface-state coupling in an intrinsic ferromagnetic topological insulator sandwich structure
• Site dilution and charge disorder effect on physical properties in SrRu${}_{1-x}$Ga${}_x$O${}_3$
• Angular dependence of Hall effect and magnetoresistance in SrRuO${}_3$-SrIrO${}_3$ heterostructures
• Inverse Proximity Effects at Spin-Triplet Superconductor-Ferromagnet Interface
• Steering of the Skyrmion Hall Angle By Gate Voltage
• Mapping the phase diagram of the quantum anomalous Hall and topological Hall effects in a dual-gated magnetic topological insulator heterostructure
• Magnetic interlayer coupling between ferromagnetic SrRuO${}_3$ layers through a SrIrO${}_3$ spacer
• Multifunctional Oxides for Topological Magnetic Textures by Design
• Giant non-volatile electric field control of proximity induced magnetism in the spin-orbit semimetal SrIrO3
• Emergent giant topological Hall effect in twisted Fe3GeTe2 metallic system
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• Bounds and anomalies of inhomogeneous anomalous Hall effects
• Giant Topological Hall Effect Across Wide Temperature in Pt/NiCo2O4 Heterostructure