Spin Hall Induced Magnetization Dynamics in Multiferroic Tunnel Junction

Abstract

The combination of spin-orbit coupling driven effects and multiferroic tunneling properties was explored experimentally in thin Pt/Co/BTO/LSMO multilayers. The presence of a Pt heavy metal allows for the spin current-induced magnetization precession of Co upon radio-frequency charge current injection. The utilization of a BTO ferroelectric tunnel barrier separating the Co and LSMO ferromagnetic electrodes gives rise to both tunneling-magnetoresistance and electroresistance. Using the spin-orbit torque ferromagnetic resonance, the maganetization dynamics of the Co/Pt bilayers was studied at room temperature. Unexpectedly the magnetization dynamics study in the same geometry performed at low temperature reveals the existence of both Co and LSMO resonance peaks indicating efficient spin current generation both using the spin Hall effect in Pt and spin pumping in LSMO that tunnel via the BTO barrier.

arXiv comment6 pages, 4 figures

References in corpus (16)

• New Perspectives for Rashba Spin-Orbit Coupling
• Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
• Quantifying spin Hall angles from spin pumping: Experiments and Theory
• Quantitative characterization of the spin orbit torque using harmonic Hall voltage measurements
• Quantitative study of the spin Hall magnetoresistance in ferromagnetic insulator/normal metal hybrids
• Dependence of the Efficiency of Spin Hall Torque on the Transparency of Pt-Ferromagnetic Layer Interfaces
• Interplay of spin-orbit torque and thermoelectric effects in ferromagnet/normal metal bilayers
• Critical thickness and orbital ordering in ultrathin La0.7Sr0.3MnO3 films
• Precise determination of the spectroscopic g-factor using broadband ferromagnetic resonance spectroscopy
• Room-temperature ferroelectric switching of spin-to-charge conversion in GeTe
• Room temperature antiferromagnetic resonance and inverse spin-Hall voltage in canted antiferromagnets
• Spin-orbit magnetic state readout in scaled ferromagnetic/heavy metal nanostructures
• Field-free spin-orbit torque switching in Co/Pt/Co multilayer with mixed magnetic anisotropies
• Spin-pumping through a varying-thickness MgO interlayer in Fe/Pt system
• Strain-controlled responsiveness of slave half-doped manganite La0.5Sr0.5MnO3 layers inserted in BaTiO3 ferroelectric tunnel junctions
• Spin-orbit torque induced magnetisation dynamics and switching in CoFeB/Ta/CoFeB system with mixed magnetic anisotropy