Spin Transport through the metallic antiferromagnet FeMn

Abstract

We investigate spin transport through metallic antiferromagnets using measurements based on spin pumping combined with inverse spin Hall effects in Ni80Fe20/FeMn/W trilayers. The relatively large magnitude and opposite sign of spin Hall effects in W compared to FeMn enable an unambiguous detection of spin currents transmitted through the entire FeMn layer thickness. Using this approach we can detect two distinctively different spin transport regimes, which we associate with electronic and magnonic spin currents respectively. The latter can extend to relatively large distances (up to 9 nm) and is enhanced when the antiferromagnetic ordering temperature is close to the measurement temperature.

References in corpus (25)

• Antiferromagnetic spintronics
• Enhanced Gilbert Damping in Thin Ferromagnetic Films
• Electrical switching of an antiferromagnet
• Direct electronic measurement of the spin Hall effect
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• Thermal generation of spin current in an antiferromagnet
• Spin-current probe for phase transition in an insulator
• Enhanced spin pumping efficiency in antiferromagnetic IrMn thin films around the magnetic phase transition
• Conduction of spin currents through insulating oxides
• Dependence of spin pumping spin Hall effect measurements on layer thicknesses and stacking order
• Anti-damping spin transfer torque through epitaxial Nickel oxide
• Enhanced DC Spin Pumping into a Fluctuating Ferromagnet near Tc
• All electrical manipulation of magnetization dynamics in a ferromagnet by antiferromagnets with anisotropic spin Hall effects
• Transformation of spin current by antiferromagnetic insulators
• Field-like spin orbit torque in ultra-thin polycrystalline FeMn films
• New pathways towards efficient metallic spin Hall spintronics

Cited by in corpus (17)

• Antiferromagnetic spintronics
• Interface-Induced Phenomena in Magnetism
• Perspective on Metallic Antiferromagnets
• Propagation length of antiferromagnetic magnons governed by domain configurations
• Spin pumping into superconductors: A new probe of spin dynamics in a superconducting thin film
• Observation of current-induced switching in non-collinear antiferromagnetic IrMn${}_3$ by differential voltage measurements
• Independence of spin-orbit torques from the exchange bias direction in Ni${}_{81}$Fe${}_{19}$/IrMn bilayers
• Spin transport across antiferromagnets induced by the spin Seebeck effect
• Transition of laser-induced terahertz spin currents from torque- to conduction-electron-mediated transport
• 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
• Observation of Fluctuation Spin Hall Effect in Antiferromagnet
• Spin pumping as a generic probe for linear spin fluctuations: demonstration with ferromagnetic and antiferromagnetic orders, metallic and insulating electrical states
• Crossover from Diffusive to Superfluid Transport in Frustrated Magnets
• Antiferromagnet-mediated interlayer exchange: hybridization versus proximity effect
• Spin pumping into a spin glass material
• Zero-field spin-orbit-torque switching driven by magnetic spin Hall effect