Interfacial spin-orbit torque without bulk spin-orbit coupling

Abstract

An electric current in the presence of spin-orbit coupling can generate a spin accumulation that exerts torques on a nearby magnetization. We demonstrate that, even in the absence of materials with strong bulk spin-orbit coupling, a torque can arise solely due to interfacial spin-orbit coupling, namely Rashba-Eldestein effects at metal/insulator interfaces. In magnetically soft NiFe sandwiched between a weak spin-orbit metal (Ti) and insulator (Al${}_2$O${}_3$), this torque appears as an effective field, which is significantly larger than the Oersted field and sensitive to insertion of an additional layer between NiFe and Al${}_2$O${}_3$. Our findings point to new routes for tuning spin-orbit torques by engineering interfacial electric dipoles.

References in corpus (21)

• Magnetic switching by spin torque from the spin Hall effect
• Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
• Symmetry and magnitude of spin-orbit torques in ferromagnetic heterostructures
• Layer thickness dependence of the current induced effective field vector in Ta|CoFeB|MgO
• Evidence for reversible control of magnetization in a ferromagnetic material via spin-orbit magnetic field
• Magneto-ionic Control of Interfacial Magnetism
• Current induced torques and interfacial spin-orbit coupling: Semiclassical Modeling
• Spin torque study of the spin Hall conductivity and spin diffusion length in platinum thin films with varying resistivity
• Interplay of spin-orbit torque and thermoelectric effects in ferromagnet/normal metal bilayers
• Spin-orbit torque engineering via oxygen manipulation
• Spin-orbit driven ferromagnetic resonance: A nanoscale magnetic characterisation technique
• Spin-orbit torques in Co/Pt(111) and Mn/W(001) magnetic bilayers from first principles
• Enhancement of Perpendicular Magnetic Anisotropy and Transmission of Spin-Hall-Effect-Induced Spin Currents by a Hf Spacer Layer in W/Hf/CoFeB/MgO Layer
• Comparison of spin-orbit torques and spin pumping across NiFe/Pt and NiFe/Cu/Pt interfaces
• Self-induced inverse spin Hall effect in permalloy at room temperature
• Experimental Demonstration of the Co-existence of the Spin Hall and Rashba Effects in beta-Tantalum/Ferromagnet Bilayers
• Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx
• Control of current-induced spin-orbit effects in a ferromagnetic heterostructure by electric field
• Spin-orbit torque opposing the Oersted torque in ultrathin Co/Pt bilayers
• Anisotropic magnetoresistance driven by surface spin orbit scattering
• Spin-Hall Conductivity and Electric Polarization in Metallic Thin Films

Cited by in corpus (34)

• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Spin Transport at Interfaces with Spin-Orbit Coupling: Phenomenology
• Orbital Torque: Torque Generation by Orbital Current Injection
• Spin Transport at Interfaces with Spin-Orbit Coupling: Formalism
• Efficient conversion of orbital Hall current to spin current for spin-orbit torque switching
• Observation of long-range orbital transport and giant orbital torque
• Orbital Rashba effect in surface oxidized Cu film
• Observation of Spin-Orbit Effects with Spin Rotation Symmetry
• Spin-orbit torques in NbSe${}_2$/Permalloy bilayers
• An Intrinsic Spin Orbit Torque Nano-Oscillator
• Investigation of the Dzyaloshinskii-Moriya interaction and room temperature skyrmions in W/CoFeB/MgO thin films and microwires
• Proximity band structure and spin textures on both sides of topological-insulator/ferromagnetic-metal interface and their transport probes
• Giant bulk spin-orbit torque and efficient electrical switching in single ferrimagnetic FeTb layers with strong perpendicular magnetic anisotropy
• Spin-orbit coupling in single layer ferrimagnets: direct observation of spin-orbit torques and chiral spin textures
• Spin transport and dynamics in all-oxide perovskite La${}_{2/3}$Sr${}_{1/3}$MnO${}_3$/SrRuO${}_3$ bilayers probed by ferromagnetic resonance
• Theory of current-induced spin polarizations in an electron gas
• Absence of significant spin current generation in Ti/FeCoB bilayers with strong interfacial spin-orbit coupling
• Interfacial and bulk spin Hall contributions to field-like spin-orbit torque generated by Iridium
• Gigantic Anisotropy of Self-Induced Spin-Orbit Torque in Weyl Ferromagnet Co2MnGa
• Nonlocal Spin Transport Mediated by a Vortex Liquid in Superconductors
• Current-induced spin-orbit field in permalloy interfaced with ultrathin Ti and Cu
• Semitransparent anisotropic and spin Hall magnetoresistance sensor enabled by spin-orbit toque biasing
• Substrate-induced spin-torque-like signal in spin-torque ferromagnetic resonance measurement
• Interface-induced field-like optical spin torque in a ferromagnet/heavy metal heterostructure
• Tunable spin and orbital torques in Cu-based magnetic heterostructures
• Lead-free Hybrid Perovskite: An Efficient Room Temperature Spin Generator via Large Interfacial Rashba effect
• Dynamic nuclear spin polarization induced by Edelstein effect at Bi(111) surfaces
• Growth, strain and spin orbit torques in epitaxial NiMnSb films sputtered on GaAs
• Vertically Graded Fe-Ni Alloys with Low Damping and a Sizeable Spin-Orbit Torque
• Switching of biaxial synthetic antiferromagnets: a micromagentic study
• Odd symmetry planar Hall effect: A method of detecting current-induced in-plane magnetization switching
• Multiscale approach for modeling magnetization properties of inhomogeneous ultrathin magnetic layers
• Spin-Orbit Torque in a Single Ferromagnetic Layer with Large Spin-Orbit Coupling
• In-situ study of oxygen exposure effect on spin-orbit torque in Pt/Co bilayers in ultrahigh vacuum