Dependence of the Efficiency of Spin Hall Torque on the Transparency of Pt-Ferromagnetic Layer Interfaces

Abstract

We report that spin current transport across Pt-ferromagnet (FM) interfaces is strongly dependent on the type and the thickness of the FM layer and on post-deposition processing protocols. By employing both harmonic voltage measurements and spin-torque ferromagnetic resonance measurements, we find that the efficiency of the Pt spin Hall effect in exerting a damping-like spin torque on the FM ranges from < 0.05 to > 0.10 under different interfacial conditions. We also show that the temperature dependence of the spin torque efficiencies for both the damping-like torque and field-like torque is dependent upon the details of the Pt-FM interface. The "internal" spin Hall angle of the Pt thin films used in this study, after taking the interfacial spin transmission factor into account, is estimated to be ~ 0.20. This suggests that a careful engineering of Pt-FM interfaces can improve the spin-Hall-torque efficiency of Pt-based spintronic devices.

References in corpus (17)

• Spin Transfer Torque Generated by the Topological Insulator Bi_2Se_3
• Theory of spin Hall magnetoresistance
• 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
• Matching domain wall configuration and spin-orbit torques for very efficient domain-wall motion
• Central role of domain wall depinning for perpendicular magnetization switching driven by spin torque from the spin Hall effect
• Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
• Angular and temperature dependence of current induced spin-orbit effective fields in Ta/CoFeB/MgO nanowires
• Enhancement of Perpendicular Magnetic Anisotropy and Transmission of Spin-Hall-Effect-Induced Spin Currents by a Hf Spacer Layer in W/Hf/CoFeB/MgO Layer
• Comparison of spin-orbit torques and spin pumping across NiFe/Pt and NiFe/Cu/Pt interfaces
• Interface enhancement of Gilbert damping from first-principles
• Enhancement of the Anti-Damping Spin Torque Efficacy of Platinum by Interface Modification
• Anomalous temperature dependence of current induced torques in CoFeB|MgO heterostructures with Ta based underlayers
• Temperature dependent spin transport properties of Platinum inferred from spin Hall magnetoresistance measurements
• Control of current-induced spin-orbit effects in a ferromagnetic heterostructure by electric field
• Phase-sensitive detection of spin pumping via the ac inverse spin Hall effect
• Spin-orbit torque opposing the Oersted torque in ultrathin Co/Pt bilayers

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