Unconventional anomalous Hall effect in 3d/5d multilayers mediated by the nonlocal spin-conductivity

Abstract

We evidenced unconventionnal Anomalous Hall Effects (AHE) in 3d/5d (Co0.2nm/Ni0.6nm)N multilayers grown on a thin Pt layer or thin Au:W alloy. The inversion observed on AHE originates from the opposite sign of the spin-orbit coupling of Pt compared to Ni. Via advanced simulations methods for the description of the spin-current profiles based on the spin-dependent Boltzmann formalism, we extracted the spin Hall angle (SHA) of Pt and (Co/Ni) as well as the relevant transport parameters. The extracted SHA for Pt, +20%, is opposite to the one of (Co/Ni), giving rise to an effective AHE inversion for thin (Co/Ni) multilayers (N < 17). The spin Hall angle in Pt is found to be larger than the one previously measured in combined spin-pumping inverse spin-Hall effect experiments in a geometry of current perpendicular to plane. Whereas magnetic proximity effects cannot explain the effect, spin-current leakage and anisotropic electron scattering at Pt/(Co,Ni) interfaces fit the experiments.

7 pages, 2 figures

References in corpus (50)

• Anomalous Hall effect
• Spin torque switching with the giant spin Hall effect of tantalum
• Current-driven dynamics of chiral ferromagnetic domain walls
• Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
• Spin transfer torque devices utilizing the giant spin Hall effect of tungsten
• Interface-Induced Phenomena in Magnetism
• Study of Intrinsic Spin Hall Effect and Orbital Hall Effect in 4d- and 5d- Transition Metals
• Spin Pumping and Inverse Spin Hall Effect in Platinum: The Essential Role of Spin-Memory Loss at Metallic Interfaces
• Role of transparency of platinum-ferromagnet interface in determining intrinsic magnitude of spin Hall effect
• Dependence of the Efficiency of Spin Hall Torque on the Transparency of Pt-Ferromagnetic Layer Interfaces
• Spin torque study of the spin Hall conductivity and spin diffusion length in platinum thin films with varying resistivity
• Intrinsic spin Hall effect in platinum metal
• Perspective: Ultrafast magnetism and THz spintronics
• Magnetic oscillations driven by the spin Hall effect in 3-terminal magnetic tunnel junction devices
• Giant Spin Hall Effect Induced by Skew Scattering from Bismuth Impurities inside Thin Film CuBi Alloys
• Tuning the spin Hall effect of Pt from the moderately dirty to the superclean regime
• Time- and spatially-resolved magnetization dynamics driven by spin-orbit torques
• Interface-generated spin currents
• Domain wall tilting in the presence of the Dzyaloshinskii-Moriya interaction in out-of-plane magnetized magnetic nanotracks
• Extrinsic Spin Hall Effect Induced by Iridium Impurities in Copper
• Highly efficient spin current generation by the spin Hall effect in Au${}_{1-x}$Pt${}_x$
• Spin-orbit torques in heavy metal/ferromagnet bilayers with varying strength of interfacial spin-orbit coupling
• Fermi-surface calculation of the anomalous Hall conductivity
• Spin pumping damping and magnetic proximity effect in Pd and Pt spin-sink layers
• Temperature Dependence of the Intrinsic Anomalous Hall Effect in Nickel
• Perspectives of Electrically generated spin currents in ferromagnetic materials
• Experimental evidences of a large extrinsic spin Hall effect in AuW alloy
• Determination of spin Hall effect and spin diffusion length of Pt from self-consistent fitting of damping enhancement and inverse spin-orbit torque measurements
• CPP Magnetoresistance of Magnetic Multilayers: A critical review
• Disorder Dependence of Interface Spin Memory Loss
• Enhancing spin-orbit torque by strong interfacial scattering from ultra-thin insertion layers
• Enhanced spin Hall effect by resonant skew scattering in orbital-selective Kondo effect
• Relation between spin Hall effect and anomalous Hall effect in 3$d$ ferromagnetic metals
• Orientation Dependence of the Intrinsic Anomalous Hall Effect in hcp Cobalt
• Ab Initio Theory of Scattering-Independent Anomalous Hall Effect
• Chirality in magnetic multilayers probed by the symmetry and the amplitude of dichroism in X-ray resonant magnetic scattering
• Large enhancement of the spin Hall effect in Au by scattering with side-jump on Ta impurities
• Intrinsic anomalous Hall effect in ferromagnetic metals studied by the multi d-orbital tight-binding model
• Perpendicular magnetization reversal in Pt/[Co/Ni]${}_3$/Al multilayers via the Spin Hall Effect of Pt
• Ab initio theory of galvanomagnetic phenomena in ferromagnetic metals and disordered alloys
• Spin-Scattering Rates in Metallic Thin Films Measured by Ferromagnetic Resonance Damping Enhanced by Spin-Pumping
• Skew scattering in dilute ferromagnetic alloys
• Anomalous spin Hall magnetoresistance in Pt/Co bilayers
• Inductive detection of field-like and damping-like AC inverse spin-orbit torques in ferromagnet/normal metal bilayers
• Reversal of the extraordinary Hall effect polarity in thin Co/Pd multilayers
• Anisotropy of spin relaxation in metals
• Suppression of the fieldlike spin-orbit torque efficiency due to the magnetic proximity effect in ferromagnet/platinum bilayers
• Insights into spin and charge currents crossing ferromagnetic/nonmagnetic interfaces induced by spin and anomalous Hall effect
• Current distribution in metallic multilayers from resistance measurements
• Absence of strong skew scattering in crystals with multi-sheeted Fermi surfaces

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