Electric-field control of spin-orbit torque in a magnetically doped topological insulator

Abstract

Electric-field manipulation of magnetic order has proved of both fundamental and technological importance in spintronic devices. So far, electric-field control of ferromagnetism, magnetization and magnetic anisotropy has been explored in various magnetic materials, but the efficient electric-field control of spin-orbit torque (SOT) still remains elusive. Here, we report the effective electric-field control of a giant SOT in a Cr-doped topological insulator (TI) thin film using a top-gate FET structure. The SOT strength can be modulated by a factor of 4 within the accessible gate voltage range, and it shows strong correlation with the spin-polarized surface current in the film. Furthermore, we demonstrate the magnetization switching by scanning gate voltage with constant current and in-plane magnetic field applied in the film. The effective electric-field control of SOT and the giant spin-torque efficiency in Cr-doped TI may lead to the development of energy-efficient gate-controlled spin-torque devices compatible with modern field-effect semiconductor technologies.

22 pages, 4 figures

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Cited by in corpus (72)

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• Interface-Induced Phenomena in Magnetism
• Roadmap of spin-orbit torques
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• Recent progress in voltage control of magnetism: Materials, mechanisms, and performance
• Hard magnetic properties in nanoflake van der Waals Fe3GeTe2
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• Current-nonlinear Hall effect and spin-orbit torque magnetization switching in a magnetic topological insulator
• Electrical control of magnetism by electric field and current-induced torques
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• Giant Edelstein effect in Topological-Insulator--Graphene heterostructures
• Dirac-Surface-State-Dominated Spin to Charge Current Conversion in the Topological Insulator $(B{i}_{0.22}S{b}_{0.78}{)}_{2}T{e}_3$ Films at Room Temperature
• Chiral Spin Mode on the Surface of a Topological Insulator
• Direct comparison of current-induced spin polarization in topological insulator Bi2Se3 and InAs Rashba states
• Spin-orbit torques originating from bulk and interface in Pt-based structures
• Unconventional Planar Hall Effect in Exchange-Coupled Topological Insulator-Ferromagnetic Insulator Heterostructures
• Weak Localization and Antilocalization in Topological Materials with Impurity Spin-Orbit Interactions
• Sign reversal of field like spin-orbit torque in ultrathin Chromium/Nickel bilayer
• Emerging spintronics phenomena and applications
• Deficiency of the Bulk Spin Hall Effect Model for Spin-Orbit Torques in Magnetic Insulator/Heavy Metal Heterostructures
• Spin Orbit Torque in two dimensional Antiferromagnetic Topological Insulators
• Spin-Orbit Torques in Transition Metal Dichalcogenide/Ferromagnet Heterostructures
• Cryogenic in-memory computing using magnetic topological insulators
• Bulk and surface spin conductivity in topological insulators with hexagonal warping
• Van der Waals heterostructures with spin-orbit coupling
• Electrical Switching of the Edge Current Chirality in Quantum Anomalous Hall Insulators
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• Highly Tunable Spin-Orbit Torque and Anisotropic Magnetoresistance in a Topological Insulator Thin Film Attached to Ferromagnetic Layer
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• Spin-Hall effect due to the bulk states of topological insulators: Extrinsic contribution to the conserved spin current
• Structurally and Chemically Compatible BiInSe3 Substrate for Topological Insulator Thin Films
• Anomalous Hall Coulomb drag of massive Dirac fermions
• Non-equilibrium spin density and spin-orbit torque in three dimensional topological insulators - antiferromagnet heterostructure
• Spin transfer torques due to the bulk states of topological insulators
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• Non-linear antidamping spin-orbit torque originating from intra-band transport on the warped surface of a topological insulator
• Inplane spin orbit torque magnetization switching and its detection using the spin rectification effect at sub-GHz frequencies
• Electrically Tunable Wafer-Sized Three-Dimensional Topological Insulator Thin Films Grown by Magnetron Sputtering
• Separation of Artifacts from Spin-Torque Ferromagnetic Resonance Measurements of Spin-Orbit Torque for the Low-Symmetry van der Waals Semi-Metal ZrTe${}_{\text{3}}$
• Thin film of a topological insulator as a spin Hall insulator
• Spacer-layer-tunable magnetism and high-field topological Hall effect in topological insulator heterostructures
• Partial Charge Transfer and Absence of Induced Magnetization in EuS(111)/Bi${}_2$Se${}_3$ Heterostructures
• Unidirectional spin Hall magnetoresistance in topological insulator/ferromagnetic layer heterostructures
• Manipulating Spin-Lattice Coupling in Layered Magnetic Topological Insulator Heterostructure $via$ Interface Engineering
• Chiral-induced switching of antiferromagnet spins in a confined nanowire
• Voltage-control of damping constant in magnetic-insulator/topological-insulator bilayers
• Coulomb drag in topological materials
• Momentum relaxation effects in 2D-Xene field effect device structures
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• Topological Insulators-Based Magnetic Heterostructure
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• Tailoring Ultrathin Magnetic Multilayers at Terraced Topologically Insulating Interfaces for Perpendicularly Magnetized Domains