YIG thickness and frequency dependence of the spin-charge current conversion in YIG/Pt systems

Abstract

We report the frequency dependence of the spin current emission in a hybrid ferrimagnetic insulator/normal metal system as function of the insulating layer thickness. The system is based on a yttrium iron garnet (YIG) film [0.2, 1, and 3 μm] grown by liquid-phase-epitaxy coupled with a spin current detector of platinum [6 nm]. A strong YIG thickness dependence of the efficiency of the spin pumping has been observed. The highest conversion factor ΔV/P_{abs} has been demonstrated for the thinner YIG (1.79 and 0.55 mV/mW^{-1} at 2.5 and 10 GHz, respectively) which presents an interest for the realisation of YIG-based devices. A strong YIG thickness dependence of the efficiency of the spin pumping has been also observed and we demonstrate the threshold frequency dependence of the three-magnon splitting process.

6 pages, 5 figures

References in corpus (5)

• Phase reciprocity of spin-wave excitation by a microstrip antenna
• Platinum thickness dependence of the inverse spin-Hall voltage from spin pumping in a hybrid YIG/Pt system
• Frequency and power dependence of spin-current emission by spin pumping in a thin film YIG/Pt system
• Microscopic spin-wave theory for yttrium-iron garnet films
• Field-dependence of magnon decay in yttrium iron garnet thin films

Cited by in corpus (11)

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• Dirac-Surface-State-Dominated Spin to Charge Current Conversion in the Topological Insulator $(B{i}_{0.22}S{b}_{0.78}{)}_{2}T{e}_3$ Films at Room Temperature
• Ferromagnetic Resonance of a YIG film in the Low Frequency Regime
• Magnetic properties and domain structure of ultrathin yttrium iron garnet/Pt bilayers
• Ferromagnetic Resonance Studies of Strain tuned Bi:YIG Films
• Fundamentals of magnon-based computing
• Planar Hall effect induced spin rectification effect and its strong impact on spin pumping measurements
• Electrical control of spin mixing conductance in a Y${}_3$Fe${}_5$O${}_{12}$/Platinum bilayer
• Detection of spin pumping from YIG by spin-charge conversion in a Au/Ni${}_{80}$Fe${}_{20}$ spin-valve structure
• Control of magnon-photon coupling strength in a planar resonator/YIG thin film configuration