Temperature-dependent proximity magnetism in Pt

Abstract

We experimentally demonstrate the existence of magnetic coupling between two ferromagnets separated by a thin Pt layer. The coupling remains ferromagnetic regardless of the Pt thickness, and exhibits a significant dependence on temperature. Therefore, it cannot be explained by the established mechanisms of magnetic coupling across nonmagnetic spacers. We show that the experimental results are consistent with the presence of magnetism induced in Pt in proximity to ferromagnets, in direct analogy to the well-known proximity effects in superconductivity.

4 pages, 3 figures

References in corpus (3)

• Magnetic oscillations driven by the spin Hall effect in 3-terminal magnetic tunnel junction devices
• Spectral Characteristics of the Microwave Emission by the Spin Hall Nano-Oscillator
• Platinum thickness dependence of the inverse spin-Hall voltage from spin pumping in a hybrid YIG/Pt system

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• Electrically tunable valley polarization in Weyl semimetals with tilted energy dispersion
• Threshold Interface Magnetization Required to Induce Magnetic Proximity Effect
• Suppression of the fieldlike spin-orbit torque efficiency due to the magnetic proximity effect in ferromagnet/platinum bilayers
• Estimating spin diffusion length and spin Hall angle from spin pumping-induced inverse spin Hall voltages
• Spin-orbit-proximitized ferromagnetic metal by monolayer transition metal dichalcogenide: Atlas of spectral functions, spin textures and spin-orbit torques in Co/MoSe${}_2$, Co/WSe${}_2$ and Co/TaSe${}_2$ heterostructures
• Magnetic proximity effect at interface between a cuprate superconductor and an oxide spin valve
• Spin circuit representation of spin pumping
• Magnetocaloric effect in multilayers studied by membrane-based calorimetry
• Direct observation of the magnetic proximity effect in amorphous exchange-spring magnets by neutron reflectometry