Efficient spin torques in antiferromagnetic CoO/Pt quantified by comparing field- and current- induced switching

Abstract

We achieve current-induced switching in collinear insulating antiferromagnetic CoO/Pt, with fourfold in-plane magnetic anisotropy. This is measured electrically by spin Hall magnetoresistance and confirmed by the magnetic field-induced spin-flop transition of the CoO layer. By applying current pulses and magnetic fields, we quantify the efficiency of the acting current-induced torques and estimate a current-field equivalence ratio of $4x10^{-11}T{A}^{-1}{m}^2$. The Néel vector final state ($n\perp j$) is in line with a thermomagnetoelastic switching mechanism for a negative magnetoelastic constant of the CoO.

16 pages (manuscript and supplementary), 12 figures. Acknowledgments corrected

References in corpus (16)

• Antiferromagnetic spintronics
• Electrical switching of an antiferromagnet
• Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect
• Writing and Reading antiferromagnetic Mn${}_2$Au: Néel spin-orbit torques and large anisotropic magnetoresistance
• Antidamping torque-induced switching in biaxial antiferromagnetic insulators
• Controlling orbital moment and spin orientation in CoO layers by strain
• Spin Hall magnetoresistance in antiferromagnet/heavy-metal heterostructures
• Negative spin Hall magnetoresistance of Pt on the bulk easy-plane antiferromagnet NiO
• Mechanism of Néel order switching in antiferromagnetic thin films revealed by magnetotransport and direct imaging
• Electrical Switching of Tristate Antiferromagnetic Néel Order in $\alpha$-Fe${}_2$O${}_3$ Epitaxial Films
• Full angular dependence of the spin Hall and ordinary magnetoresistance in epitaxial antiferromagnetic NiO(001)/Pt thin films
• Quantitative Study on Current-Induced Effect in an Antiferromagnet Insulator/Pt Bilayer Film
• Interfacial Dzyaloshinskii-Moriya interaction and chiral magnetic textures in a ferrimagnetic insulator
• Spin Seebeck imaging of spin-torque switching in antiferromagnetic Pt/NiO heterostructures
• Spin Hall magnetoresistance as a probe for surface magnetization in Pt/CoFe${}_2$O${}_4$ bilayers
• Resistive contribution in electrical switching experiments with antiferromagnets

Cited by in corpus (20)

• Direct imaging of current-induced antiferromagnetic switching revealing a pure thermomagnetoelastic switching mechanism
• Efficient Spin-Orbit Torques in an Antiferromagnetic Insulator with Tilted Easy Plane
• Identification of Néel vector orientation in antiferromagnetic domains switched by currents in NiO/Pt thin films
• Concurrent magneto-optical imaging and magneto-transport readout of electrical switching of insulating antiferromagnetic thin films
• Antiferromagnetic insulatronics: spintronics in insulating 3d metal oxides with antiferromagnetic coupling
• Voltage-controlled magnetic anisotropy in antiferromagnetic MgO-capped MnPt films
• Strain-induced Shape Anisotropy in Antiferromagnetic Structures
• Non-classical spin transfer effects in an antiferromagnet
• Spin Hall magnetoresistance effect from a disordered interface
• Magnetic sensitivity distribution of Hall devices in antiferromagnetic switching experiments
• Identifiying the domain wall spin structure in current-induced switching of antiferromagnetic NiO/Pt
• Spin orbit torque switching of antiferromagnet through the Neel reorientation in rare-earth ferrite
• Magnon Transport in the Presence of Antisymmetric Exchange in a Weak Antiferromagnet
• Identifying Switching of Antiferromagnets by Spin-Orbit Torques
• Antiferromagnetic Hysteresis above the Spin Flop Field
• First-principles calculations of spin-orbit torques in Mn${}_2$Au/heavy-metal bilayers
• Giant orbital magnetoresistance in the antiferromagnet CoO driven by dynamic orbital angular momentum interaction
• Ultrafast amplification and non-linear magneto-elastic coupling of coherent magnon modes in an antiferromagnet
• Electrical switching of antiferromagnetic CoO | Pt across the Néel temperature
• Direct and inverse spin-orbit torques in antiferromagnetic and ferromagnetic FeRh/W(001)