Electrical manipulation of a ferromagnet by an antiferromagnet

Abstract

We demonstrate that an antiferromagnet can be employed for a highly efficient electrical manipulation of a ferromagnet. In our study we use an electrical detection technique of the ferromagnetic resonance driven by an in-plane ac-current in a NiFe/IrMn bilayer. At room temperature, we observe antidamping-like spin torque acting on the NiFe ferromagnet, generated by the in-plane current driven through the IrMn antiferromagnet. A large enhancement of the torque, characterized by an effective spin-Hall angle exceeding most heavy transition metals, correlates with the presence of the exchange-bias field at the NiFe/IrMn interface. It highlights that, in addition to strong spin-orbit coupling, the antiferromagnetic order in IrMn governs the observed phenomenon.

Main text: 7 pages, 6 figures. Includes supplementary information of 10 pages, 8 figures. Changes from the previous version include a new control experiment, two new figures in the main text, expanded discussion on the origins of the observed effect. Additionally, 2 new supplementary sections have been added

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• Antiferromagnetic spintronics
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• Interface-Induced Phenomena in Magnetism
• Roadmap of spin-orbit torques
• Strong, anisotropic anomalous Hall effect and spin Hall effect in chiral antiferromagnetic compounds Mn${}_{3}X$ ($X$ = Ge, Sn, Ga, Ir, Rh and Pt)
• Spin-polarized current in non-collinear antiferromagnets
• Controlling spin current polarization through non-collinear antiferromagnetism
• Anomalous Antiferromagnetism in Metallic RuO${}_2$ Determined by Resonant X-ray Scattering
• Concepts of antiferromagnetic spintronics
• Spin-orbit torque switching of magnetic tunnel junctions for memory application
• Strong Spin Hall Effect in the Antiferromagnet PtMn
• Intrinsic spin-orbit torque arising from Berry curvature in metallic-magnet/Cu-oxide interface
• Perspective on Metallic Antiferromagnets
• Magnetic asymmetry induced anomalous spin-orbit torque in IrMn
• A fully relativistic description of spin-orbit torques by means of linear response theory
• Independence of spin-orbit torques from the exchange bias direction in Ni${}_{81}$Fe${}_{19}$/IrMn bilayers
• Spin-orbit torques originating from bulk and interface in Pt-based structures
• Magnetic domain texture and the Dzyaloshinskii-Moriya interaction in Pt/Co/IrMn and Pt/Co/FeMn thin films with perpendicular exchange bias
• Charge-spin current conversion in high quality epitaxial Fe/Pt systems: isotropic spin Hall angle along different in-plane crystalline directions
• Magnetic properties of ruthenium dioxide (RuO2) and charge-magnetic interference in Bragg diffraction of circularly polarized x-rays
• Epitaxial growth, structural characterization and exchange bias of non-collinear antiferromagnetic Mn${}_3$Ir thin films
• Unraveling the influence of electronic and magnonic spin current injection near the magnetic ordering transition of IrMn metallic antiferromagnets
• Impact of gigahertz and terahertz transport regimes on spin propagation and conversion in the antiferromagnet IrMn
• Interfacial origin of unconventional spin-orbit torque in Py/$\gamma -$IrMn${}_3$
• Thickness dependence study of current-driven ferromagnetic resonance in Y3Fe5O12/heavy metal bilayers
• Extrinsic-Intrinsic Crossover of the Spin Hall Effect Induced by Alloying
• Probing a spin transfer controlled magnetic nanowire with a single nitrogen-vacancy spin in bulk diamond
• Damping and Anti-Damping Phenomena in Metallic Antiferromagnets: An ab-initio Study
• Dimensional crossover in spin Hall oscillators
• Large interfacial spin-orbit torques in layered antiferromagnetic insulator NiPS${}_3$/ferromagnet bilayers
• Anomalous sign inversion of spin-orbit torque in ferromagnetic/nonmagnetic bilayer systems due to self-induced spin-orbit torque
• Spin decoherence independent of antiferromagnetic order in IrMn
• Spin-orbit torques in a Rashba honeycomb antiferromagnet
• Lead-free Hybrid Perovskite: An Efficient Room Temperature Spin Generator via Large Interfacial Rashba effect
• Giant anisotropy of Gilbert damping in a Rashba honeycomb antiferromagnet
• Violation of local reciprocity in charge-orbital interconversion
• Dynamic detection of current-induced spin-orbit magnetic fields: a phase independent approach
• Spin-transport, spin-torque and memory in antiferromagnetic devices: Part of a collection of reviews on antiferromagnetic spintronics
• RF field characterization and rectification effects in spin pumping and spin-torque FMR for spin-orbitronics
• Strong, Temperature-Dependent Spin-Orbit Torques in Heavy Fermion YbAl${}_3$
• Surface Rashba-Edelstein Spin-Orbit Torque Revealed by Molecular Self-Assembly