A Universal Method for Separating Spin Pumping from Spin Rectification Voltage of Ferromagnetic Resonance

Abstract

We develop a method for universally resolving the important issue of separating spin pumping (SP) from spin rectification (SR) signals in bilayer spintronics devices. This method is based on the characteristic distinction of SP and SR, as revealed in their different angular and field symmetries. It applies generally for analyzing charge voltages in bilayers induced by the ferromagnetic resonance (FMR), independent of FMR line shape. Hence, it solves the outstanding problem that device specific microwave properties restrict the universal quantification of the spin Hall angle in bilayer devices via FMR experiments. Furthermore, it paves the way for directly measuring the nonlinear evolution of spin current generated by spin pumping. The spin Hall angle in a Py/Pt bilayer is thereby directly measured as 0.021$\pm$0.015 up to a large precession cone angle of about 20${}^{\circ }$.

5 pages, 4 figures

References in corpus (7)

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• Quantitative study of the spin Hall magnetoresistance in ferromagnetic insulator/normal metal hybrids
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• Cavity Spintronics: An Early Review of Recent Progress in the Study of Magnon-Photon Level Repulsion
• Measurement of spin pumping voltage separated from extrinsic microwave effects
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• Direct Method for Calculating Temperature-Dependent Transport Properties
• Current-induced spin torque resonance of magnetic insulators
• Current-induced spin torque resonance of a magnetic insulator
• Driving and detecting ferromagnetic resonance in insulators with the spin Hall effect
• Determination of the spin Hall angle, spin mixing conductance and spin diffusion length in Ir/CoFeB for spin-orbitronic devices
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• Spin transport and dynamics in all-oxide perovskite La${}_{2/3}$Sr${}_{1/3}$MnO${}_3$/SrRuO${}_3$ bilayers probed by ferromagnetic resonance
• Electrical Detection of Direct and Alternating Spin Current Injected from a Ferromagnetic Insulator into a Ferromagnetic Metal
• Manipulation of coupling and magnon transport in magnetic metal-insulator hybrid structures
• Dephasing of Transverse Spin Current in Ferrimagnetic Alloys
• Spin-orbit torque characterization in a nutshell
• Estimating spin diffusion length and spin Hall angle from spin pumping-induced inverse spin Hall voltages
• Maximizing spin-orbit torque efficiency of Ta(O)/Py via modulating oxygen-induced interface orbital hybridization
• Separating Inverse spin Hall voltage and spin rectification voltage by inverting spin injection direction
• Current-induced spin torque resonance of magnetic insulators affected by field-like spin-orbit torques and out-of-plane magnetizations
• 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
• Simultaneous Optical and Electrical Spin-Torque Magnetometry with Stroboscopic Detection of Spin-Precession Phase
• Hall detection of a ppm spin polarization
• Detection of the dc inverse spin Hall effect due to spin pumping in a novel meander-stripline geometry
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• Electrical control of spin mixing conductance in a Y${}_3$Fe${}_5$O${}_{12}$/Platinum bilayer
• Spin-charge conversion in NiMnSb Heusler alloy films
• Evidence of Pure Spin-Current Generated by Spin Pumping in Interface Localized States in Hybrid Metal-Silicon-Metal Vertical Structures
• New pathways towards efficient metallic spin Hall spintronics
• Spin Pumping into Anisotropic Dirac Electrons
• Phase-resolved electrical detection of coherently coupled magnonic devices
• All-electrical detection of spin dynamics in magnetic antidot lattices by the inverse spin Hall effect
• Electrical detection of microwave assisted magnetization reversal by spin pumping
• Determination of the spin Hall angle by the inverse spin Hall effect, device level ferromagnetic resonance, and spin torque ferromagnetic resonance: a comparison of methods
• Spin rectification for collinear and non-collinear magnetization and external magnetic field configurations
• Parametric resonance of spin waves in ferromagnetic nanowires tuned by spin Hall torque
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• Inverse spin Hall effect in Nd doped SrTiO3
• Electrical manipulation of spin pumping signal through nonlocal thermal magnon transport
• Distinguishing spin pumping from spin rectification in organic semiconductor-based lateral spin pumping device architectures
• Disambiguating electrical detection of magnetization dynamics in magnetic insulators
• Chirp spectroscopy applied to the characterization of Ferromagnetic Resonance in Magnetic Tunnel Junctions