Spin-Hall Topological Hall Effect in Highly Tunable Pt/Ferrimagnetic-Insulator Bilayers

Abstract

Electrical detection of topological magnetic textures such as skyrmions is currently limited to conducting materials. While magnetic insulators offer key advantages for skyrmion technologies with high speed and low loss, they have not yet been explored electrically. Here, we report a prominent topological Hall effect in Pt/Tm${}_3$Fe${}_5$O${}_{12}$ bilayers, where the pristine Tm${}_3$Fe${}_5$O${}_{12}$ epitaxial films down to 1.25 unit cell thickness allow for tuning of topological Hall stability over a broad range from 200 to 465 K through atomic-scale thickness control. Although Tm${}_3$Fe${}_5$O${}_{12}$ is insulating, we demonstrate the detection of topological magnetic textures through a novel phenomenon: 'spin-Hall topological Hall effect' (SH-THE), where the interfacial spin-orbit torques allow spin-Hall-effect generated spins in Pt to experience the unique topology of the underlying skyrmions in Tm${}_3$Fe${}_5$O${}_{12}$. This novel electrical detection phenomenon paves a new path for utilizing a large family of magnetic insulators in future skyrmion technologies.

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Cited by in corpus (24)

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• Giant Topological Hall Effect in van der Waals Heterostructures of CrTe2/Bi2Te3
• Current-driven dynamics and ratchet effect of skyrmion bubbles in a ferrimagnetic insulator
• The chiral Hall effect of magnetic skyrmions from a cyclic cohomology approach
• Topological Hall Effect in a Topological Insulator Interfaced with a Magnetic Insulator
• Controlling the helicity of magnetic skyrmions by electrical field in frustrated magnets
• Sputtered terbium iron garnet films with perpendicular magnetic anisotropy for spintronic applications
• Current-Induced Magnetization Control in Insulating Ferrimagnetic Garnets
• All-electrical Magnon Transport Experiments in Magnetically Ordered Insulators
• Mapping of Spin-Wave Transport in Thulium Iron Garnet Thin Films Using Diamond Quantum Microscopy
• Vector vorticity of skyrmionic texture: an internal degree of freedom tunable by magnetic field
• Engineering antiferromagnetic skyrmions and antiskyrmions at metallic interfaces
• Skyrmionics in correlated oxides
• Significant Unconventional Anomalous Hall Effect in Heavy Metal/Antiferromagnetic Insulator Heterostructures
• Theory of Topological Nernst and Thermoelectric Transport in Chiral Magnets
• Multifunctional Oxides for Topological Magnetic Textures by Design
• Effect of Substrate on Spin-Wave Propagation Properties in Ferrimagnetic Thulium Iron Garnet Thin Films
• Emergent Topological Hall Effect in Fe-doped Monolayer WSe2
• Large spin-orbit torque in a-plane $\alpha$-Fe${}_2$O${}_3$/Pt bilayers
• Angular dependence of hump-shape Hall Effects for distinguishing between Karplus-Luttinger and Geometrical Origins
• Bounds and anomalies of inhomogeneous anomalous Hall effects
• Giant Topological Hall Effect Across Wide Temperature in Pt/NiCo2O4 Heterostructure
• Persistent Interfacial Topological Hall Effect Demonstrating Electrical Readout of Topological Spin Structures in Insulators
• Magneto-Optical Analysis of Magnetic Anisotropy in Ultrathin Tm${}_3$Fe${}_5$O${}_{12}$/Pt Bilayers