Spin pumping damping and magnetic proximity effect in Pd and Pt spin-sink layers

Abstract

We investigated the spin pumping damping contributed by paramagnetic layers (Pd, Pt) in both direct and indirect contact with ferromagnetic Ni${}_{81}$Fe${}_{19}$ films. We find a nearly linear dependence of the interface-related Gilbert damping enhancement $\Delta \alpha$ on the heavy-metal spin-sink layer thicknesses t${}_{\text{N}}$ in direct-contact Ni${}_{81}$Fe${}_{19}$/(Pd, Pt) junctions, whereas an exponential dependence is observed when Ni${}_{81}$Fe${}_{19}$ and (Pd, Pt) are separated by \unit[3]{nm} Cu. We attribute the quasi-linear thickness dependence to the presence of induced moments in Pt, Pd near the interface with Ni${}_{81}$Fe${}_{19}$, quantified using X-ray magnetic circular dichroism (XMCD) measurements. Our results show that the scattering of pure spin current is configuration-dependent in these systems and cannot be described by a single characteristic length.

References in corpus (20)

• Spin torque switching with the giant spin Hall effect of tantalum
• Enhanced Gilbert Damping in Thin Ferromagnetic Films
• Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
• Nonlocal magnetization dynamics in ferromagnetic heterostructures
• Anatomy of Spin-Transfer Torque
• Spin Pumping and Inverse Spin Hall Effect in Platinum: The Essential Role of Spin-Memory Loss at Metallic Interfaces
• Ab-initio calculations of exchange interactions, spin-wave stiffness constants, and Curie temperatures of Fe, Co, and Ni
• Role of transparency of platinum-ferromagnet interface in determining intrinsic magnitude of spin Hall effect
• Finite-element theory of transport in ferromagnet-normal metal systems
• First-principles study of magnetization relaxation enhancement and spin-transfer in thin magnetic films
• Comparison of spin-orbit torques and spin pumping across NiFe/Pt and NiFe/Cu/Pt interfaces
• Interface enhancement of Gilbert damping from first-principles
• Spin Hall Angle Quantification from Spin Pumping and Microwave Photoresistance
• Spin transport parameters in metallic multilayers determined by ferromagnetic resonance measurements of spin pumping
• Experimental Verification of Comparability between Spin-Orbit and Spin-Diffusion Lengths
• Spin-Scattering Rates in Metallic Thin Films Measured by Ferromagnetic Resonance Damping Enhanced by Spin-Pumping
• Finite-temperature magnetism of Fe${}_x$Pd${}_{1-x}$ and Co${}_x$Pt${}_{1-x}$ alloys
• Dependence of nonlocal Gilbert damping on the ferromagnetic layer type in FM/Cu/Pt heterostructures
• First-principles study of the spin-mixing conductance in Pt/Ni${}_{81}$Fe${}_{19}$ junctions
• Pd magnetism induced by indirect interlayer exchange coupling

Cited by in corpus (45)

• Maximizing Spin-Orbit Torque Generated by the Spin Hall Effect of Pt
• Giant anisotropy of Gilbert damping in epitaxial CoFe films
• Experimental study of extrinsic spin Hall effect in CuPt 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
• Lack of correlation between the spin mixing conductance and the ISHE-generated voltages in CoFeB/Pt,Ta bilayers
• Efficient Terahertz Generation Using Fe/Pt Spintronic Emitters Pumped at Different Wavelengths
• THz emission from Co/Pt bilayers with varied roughness, crystal structure, and interface intermixing
• Irrelevance of magnetic proximity effect to spin-orbit torques in heavy metal/ferromagnet bilayers
• Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments
• Spin transport and dynamics in all-oxide perovskite La${}_{2/3}$Sr${}_{1/3}$MnO${}_3$/SrRuO${}_3$ bilayers probed by ferromagnetic resonance
• Inductive detection of field-like and damping-like AC inverse spin-orbit torques in ferromagnet/normal metal bilayers
• Dephasing of Transverse Spin Current in Ferrimagnetic Alloys
• Relative weight of the inverse spin Hall and spin rectification effects for metallic Py,Fe/Pt and insulating YIG/Pt bilayers estimated by angular dependent spin pumping measurements
• Unifying ultrafast demagnetization and intrinsic Gilbert damping in Co/Ni bilayers with electronic relaxation near the Fermi surface
• Spin Pumping in Ion-beam Sputtered Co_{2}FeAl/Mo Bilayers:Interfacial Gilbert Damping
• Threshold Interface Magnetization Required to Induce Magnetic Proximity Effect
• Separation of the two-magnon scattering contribution to damping for the determination of the spin mixing conductance
• Estimating spin diffusion length and spin Hall angle from spin pumping-induced inverse spin Hall voltages
• Spin-pumping through a varying-thickness MgO interlayer in Fe/Pt system
• Efficient generation of spin currents by the Orbital Hall effect in pure Cu and Al and their measurement by a Ferris-wheel ferromagnetic resonance technique at the wafer level
• Consistent microscopic analysis of spin pumping effects
• Near-Unity Spin Hall Ratio in Ni${}_x$Cu${}_{1-x}$ Alloys
• Unconventional anomalous Hall effect in 3d/5d multilayers mediated by the nonlocal spin-conductivity
• Impact of the magnetic proximity effect in Pt on the total magnetic moment of Pt/Co/Ta trilayers studied by x-ray resonant magnetic reflectivity
• Charge-Spin Interconversion in Epitaxial Pt Probed by Spin-Orbit Torques in a Magnetic Insulator
• Tuning of the Dzyaloshinskii-Moriya Interaction by He${}^{+}$ ion irradiation
• Calculating the spin memory loss at Cu$|$metal interfaces from first principles
• Compositional effect on auto-oscillation behavior of Ni100-xFex/Pt spin Hall nano-oscillators
• Independence of the inverse spin Hall effect with the magnetic phase in thin NiCu films
• Damping enhancement in coherent ferrite/insulating-paramagnet bilayers
• Determining complex spin mixing conductance and spin diffusion length from spin pumping experiments in magnetic insulator/heavy metal bilayers
• Spin circuit representation of spin pumping
• Effects of screened Coulomb interaction on spin transfer torque
• Characterization of spin relaxation anisotropy in Co using spin pumping
• Enhancement of spin mixing conductance in La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$/LaNiO${}_3$/SrRuO${}_3$ heterostructures
• Nearly isotropic spin-pumping related Gilbert damping in Pt/Ni${}_{81}$Fe${}_{19}$/Pt
• Absorption of Transverse Spin Current in Ferromagnetic NiCu: Dominance of Bulk Dephasing over Spin-Flip Scattering
• Helicity-dependent optical control of the magnetization state emerging from the Landau-Lifshitz-Gilbert equation
• Room Temperature Strong Orbital Moments in Perpendicularly Magnetized Magnetic Insulator
• Spin diffusion length associated to out-of-plane resistivity of Pt thin films in spin pumping experiments
• Measurement of spin mixing conductance in Ni${}_{81}$Fe${}_{19}$/$\alpha$-W and Ni${}_{81}$Fe${}_{19}$/$\beta$-W heterostrucutures via ferromagnetic resonance
• Spin transport and magnetic proximity effect in CoFeB/normal metal/Pt trilayers
• Suppression of Spin Pumping at Metal Interfaces
• Spin-to-charge conversion in orthorhombic RhSi topological semimetal crystalline thin films
• Enhanced spin-orbit torque via interface engineering in Pt/CoFeB/MgO heterostructures