Anomalous Hall magnetoresistance in a ferromagnet

Abstract

The anomalous Hall effect, observed in conducting ferromagnets with broken time-reversal symmetry, offers the possibility to couple spin and orbital degrees of freedom of electrons in ferromagnets. In addition to charge, the anomalous Hall effect also leads to spin accumulation at the surfaces perpendicular to both the current and magnetization direction. Here we experimentally demonstrate that the spin accumulation, subsequent spin backflow, and spin-charge conversion can give rise to a different type of spin current related magnetoresistance, dubbed here as the anomalous Hall magnetoresistance, which has the same angular dependence as the recently discovered spin Hall magnetoresistance. The anomalous Hall magnetoresistance is observed in four types of samples: co-sputtered (Fe1-xMnx)0.6Pt0.4, Fe1-xMnx and Pt multilayer, Fe1-xMnx with x = 0.17 to 0.65 and Fe, and analyzed using the drift-diffusion model. Our results provide an alternative route to study charge-spin conversion in ferromagnets and to exploit it for potential spintronic applications.

References in corpus (35)

• Anomalous Hall effect
• Spin torque switching with the giant spin Hall effect of tantalum
• Spin Hall effect
• Symmetry and magnitude of spin-orbit torques in ferromagnetic heterostructures
• Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect
• Switching of perpendicular magnetization by spin-orbit torques in the absence of external magnetic fields
• Layer thickness dependence of the current induced effective field vector in Ta|CoFeB|MgO
• Anomalous Hall effect arising from noncollinear antiferromagnetism
• Theory of spin Hall magnetoresistance
• Spin Pumping and Inverse Spin Hall Effect in Platinum: The Essential Role of Spin-Memory Loss at Metallic Interfaces
• Spin-Diffusion Lengths in Metals and Alloys, and Spin-Flipping at Metal/Metal Interfaces: an Experimentalist's Critical Review
• Proper Scaling of the Anomalous Hall Effect
• Comparative Measurements of Inverse Spin Hall and Magnetoresistance in YIG|Pt and YIG|Ta
• Quantitative study of the spin Hall magnetoresistance in ferromagnetic insulator/normal metal hybrids
• Unidirectional spin Hall magnetoresistance in ferromagnet/normal metal bilayers
• Giant Anomalous Hall Effect in the Chiral Antiferromagnet Mn3Ge
• Spin Hall magnetoresistance in metallic bilayers
• Spin-orbit torque engineering via oxygen manipulation
• Spin-Hall Magnetoresistance in Platinum on Yttrium Iron Garnet: Dependence on platinum thickness and in-plane/out-of-plane magnetization
• Hanle Magnetoresistance in Thin Metal Films with Strong Spin-Orbit Coupling
• Fermi-surface calculation of the anomalous Hall conductivity
• Rashba-Edelstein Magnetoresistance in Metallic Heterostructure
• Magnetoresistance due to edge spin accumulation
• Magnetoresistance Anisotropy of Polycrystalline Cobalt Films: Geometrical-Size- and Domain-Effects
• Temperature Dependence of the Intrinsic Anomalous Hall Effect in Nickel
• Reorientable Spin Direction for Spin Current Produced by the Anomalous Hall Effect
• Spin Injection and Detection via the Anomalous Spin Hall Effect in a Ferromagnetic Metal
• Skew scattering in dilute ferromagnetic alloys
• Thickness dependence of the degree of spin polarization of the electrical current in permalloy thin films
• Magnetoresistance generated from charge-spin conversion by anomalous Hall effect in metallic ferromagnetic/nonmagnetic bilayers
• Self-current induced spin-orbit torque in FeMn/Pt multilayers
• Macro-spin Modeling and Experimental Study of Spin-orbit Torque Biased Magnetic Sensors
• Semitransparent anisotropic and spin Hall magnetoresistance sensor enabled by spin-orbit toque biasing
• Spin-transfer torque in ferromagnetic bilayers generated by anomalous Hall effect and anisotropic magnetoresistance
• Static and Dynamic Magnetic Properties of FeMn/Pt Multilayers

Cited by in corpus (17)

• Perspectives of Electrically generated spin currents in ferromagnetic materials
• Terahertz emission from anomalous Hall effect in a single-layer ferromagnet
• Switchable anomalous Hall effects in polar-stacked 2D antiferromagnet MnBi2Te4
• Fourfold anisotropic magnetoresistance of L1${}_0$ FePt due to relaxation time anisotropy
• Terahertz Emission From an Exchange-Coupled Synthetic Antiferromagnet
• Large anomalous unidirectional magnetoresistance in a single ferromagnetic layer
• Direct evidence of terahertz emission arising from anomalous Hall effect
• Spin anomalous-Hall unidirectional magnetoresistance
• Stacking-order effect on spin-orbit torque, spin-Hall magnetoresistance, and magnetic anisotropy in Ni${}_{81}$Fe${}_{19}$-IrO${}_2$ bilayers
• Absence of Spin Hall Magnetoresistance in Pt/(CoNi)n multilayers
• Absence of transport altermagnetic spin-splitting effect in RuO2
• Angle-Dependent Magnetoresistance Induced by Interface-Generated Spin Current in RuO${}_2$/Permalloy Heterostructures
• Direct imaging and control of Berry curvature in noncollinear antiferromagnetic single-crystal thin films
• Spin-Orbit Torque in a Single Ferromagnetic Layer with Large Spin-Orbit Coupling
• Influence of the Fermi surface shape on magnetotransport: the MnAs case
• Spin Hall Magnetoresistance in Metallic Bilayers with In-plane Magnetized Ferromagnets
• Modulation of field-like spin orbit torque in heavy metal / ferromagnet heterostructure