Observation of Spin-Orbit Effects with Spin Rotation Symmetry

Abstract

The spin-orbit interaction enables interconversion between a charge current and a spin current. It is usually believed that in a nonmagnetic metal (NM) or at a NM/ferromagnetic metal (FM) bilayer interface, the symmetry of spin-orbit effects (SOE) requires that the spin current, charge current and spin orientation are all orthogonal to each other. Here we show the observation of a SOE near the NM/FM interface that exhibits a very different symmetry from the conventional spin Hall effect, insofar as the spin polarization is further rotated about the magnetization. These results imply that a perpendicularly polarized spin current can be generated with an in-plane charge current simply by use of a FM/NM bilayer with magnetization collinear to the charge current. The ability to generate a spin current with arbitrary polarization using typical magnetic materials will greatly benefit the development of magnetic memories.

References in corpus (3)

• Control of spin-orbit torques through crystal symmetry in WTe2/ferromagnet bilayers
• Spin Transport at Interfaces with Spin-Orbit Coupling: Formalism
• Heat-driven spin transport in a ferromagnetic metal

Cited by in corpus (41)

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• Anomalous Spin-Orbit Torques in Magnetic Single-Layer Films
• Planar Hall torque
• Perspectives of Electrically generated spin currents in ferromagnetic materials
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• Reorientable Spin Direction for Spin Current Produced by the Anomalous Hall Effect
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• Origin of the Magnetic Spin Hall Effect: Spin Current Vorticity in the Fermi Sea
• Interfacial spin-orbit torques
• Efficient injection and detection of out-of-plane spins via the anomalous spin Hall effect in permalloy nanowires
• Field-free spin-orbit torque switching through domain wall motion
• Quantitative comparison of electrically induced spin and orbital polarizations in heavy-metal/3d-metal bilayers
• Planar Hall driven torque in a FM/NM/FM system
• Spin-Torque-driven Terahertz Auto Oscillations in Non-Collinear Coplanar Antiferromagnets
• Breaking the current density threshold in spin-orbit-torque magnetic random access memory
• Emerging spintronics phenomena and applications
• Current-induced perpendicular effective magnetic field in magnetic heterostructures
• Efficient generation of out-of-plane polarized spin current in polycrystalline heavy metal devices with broken electric symmetries
• A Perspective on Electrical Generation of Spin Current for Magnetic Random Access Memories
• Current-induced spin-orbit field in permalloy interfaced with ultrathin Ti and Cu
• Charge-Spin Interconversion in Epitaxial Pt Probed by Spin-Orbit Torques in a Magnetic Insulator
• Dimensional crossover in spin Hall oscillators
• Self-stabilizing exchange-mediated spin transport
• Perspectives on spin hydrodynamics in ferromagnetic materials
• Spin-orbit torques and tunable Dzyaloshinskii-Moriya interaction in Co/Cu/Co trilayers
• Free-Layer-Thickness-dependence of the Spin Galvanic Effect with Spin Rotation Symmetry
• Theory of in-plane current induced spin torque in metal/ferromagnet bilayers
• Enhancing z spin generation in trivial spin Hall materials for scalable, energy-efficient, field-free, complete spin-orbit torque switching applications
• Resonant Measurement of Non-Reorientable Spin-Orbit Torque from a Ferromagnetic Source Layer Accounting for Dynamic Spin Pumping
• Enhancement of spin-orbit torque efficiency by tailoring interfacial spin-orbit coupling in Pt-based magnetic multilayers
• Investigation of spin orbit torque driven dynamics in ferromagnetic heterostructures
• Dzyaloshinskii-Moriya interaction induced extrinsic linewidth broadening of ferromagnetic resonance
• Cluster magnetic octupole induced out-of-plane spin polarization in antiperovskite antiferromagnet
• Inductive detection of inverse spin-orbit torques in magnetic heterostructures
• Hall mass and transverse Noether spin currents in noncollinear antiferromagnets
• Theory of magnetic spin and orbital Hall and Nernst effects in bulk ferromagnets
• Intrinsic spin accumulation in the magnetic spin Hall effect