Competing effects at Pt/YIG interfaces: spin Hall magnetoresistance, magnon excitations and magnetic frustration

Abstract

We study the spin Hall magnetoresistance (SMR) and the magnon spin transport (MST) in Pt/Y3Fe5O12(YIG)-based devices with intentionally modified interfaces. Our measurements show that the surface treatment of the YIG film results in a slight enhancement of the spin-mixing conductance and an extraordinary increase in the efficiency of the spin-to-magnon excitations at room temperature. The surface of the YIG film develops a surface magnetic frustration at low temperatures, causing a sign change of the SMR and a dramatic suppression of the MST. Our results evidence that SMR and MST could be used to explore magnetic properties of surfaces, including those with complex magnetic textures, and stress the critical importance of the non-magnetic/ferromagnetic interface properties in the performance of the resulting spintronic devices.

15 pages, 4 figures

References in corpus (16)

• Direct electronic measurement of the spin Hall effect
• Spin Seebeck insulator
• Theory of spin Hall magnetoresistance
• Temperature dependence of spin diffusion length and spin Hall angle in Au and Pt
• Magnon Mediated Electric Current Drag Across a Ferromagnetic Insulator Layer
• Spin convertance at magnetic interfaces
• Magnetoresistance due to edge spin accumulation
• Experimental Demonstration of the Co-existence of the Spin Hall and Rashba Effects in beta-Tantalum/Ferromagnet Bilayers
• Experimental Verification of Comparability between Spin-Orbit and Spin-Diffusion Lengths
• Interfacial Spin and Heat Transfer between Metals and Magnetic Insulators
• Control of spin injection by direct current in lateral spin valves
• Intrinsic magnetoresistance in metal films on ferromagnetic insulators
• Spin-dependent Seebeck effect in non-local spin valve devices
• Modulation of pure spin currents with a ferromagnetic insulator
• Competition between Ferrimagnetism and Magnetic Frustration in Zinc Substituted YBaFe4O7
• Control of spin current by a magnetic YIG substrate in NiFe/Al nonlocal spin valves

Cited by in corpus (40)

• Photoferroelectric oxides
• Femtosecond formation dynamics of the spin Seebeck effect revealed by terahertz spectroscopy
• Tunable sign change of spin Hall magnetoresistance in Pt/NiO/YIG structures
• Long-distance spin transport in a disordered magnetic insulator
• Temperature dependence of the magnon spin diffusion length and magnon spin conductivity in the magnetic insulator yttrium iron garnet
• Propagation length of antiferromagnetic magnons governed by domain configurations
• Efficient spin transport in a paramagnetic insulator
• Nonlocal magnon spin transport in NiFe${}_2$O${}_4$ thin films
• Unexpected structural and magnetic depth dependence of YIG thin films
• Pure spin currents in magnetically ordered insulator/normal metal heterostructures
• Synthetic antiferromagnetic coupling between ultra-thin insulating garnets
• Strong interfacial exchange field in a heavy metal/ferromagnetic insulator system determined by spin Hall magnetoresistance
• Thermally Driven Long Range Magnon Spin Currents in Yttrium Iron Garnet due to Intrinsic Spin Seebeck Effect
• Observation of nonreciprocal magnon Hanle effect
• Spin-Hall magnetoresistance in a low-dimensional magnetic insulator
• Magnon Planar Hall Effect and Anisotropic Magnetoresistance in a Magnetic Insulator
• Differences in the magnon diffusion length for electrically and thermally driven magnon currents in Y${}_3$Fe${}_5$O${}_{12}$
• Anomalous Hall-like transverse magnetoresistance in Au thin films on Y${}_3$Fe${}_5$O${}_{12}$
• All-electrical Magnon Transport Experiments in Magnetically Ordered Insulators
• Magnetic field dependence of the nonlocal spin Seebeck effect in Pt/YIG/Pt systems at low temperatures
• Role of spin mixing conductance in determining thermal spin pumping near the ferromagnetic phase transition in EuO_{1-x} and La2NiMnO6
• Electrically induced strong modulation of magnons transport in ultrathin magnetic insulator films
• Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y${}_3$Fe${}_5$O${}_{12}$ and inverted Y${}_3$Fe${}_5$O${}_{12}$/Pt bilayers
• Role of NiO in the nonlocal spin transport through thin NiO films on Y${}_3$Fe${}_5$O${}_{12}$
• Magnon transport in ${\mathbf{Y}}_3\mathbf{F}{\mathbf{e}}_5{\mathbf{O}}_{12}$/Pt nanostructures with reduced effective magnetization
• Microwave control of thermal magnon spin transport
• Absence of evidence of spin transport through amorphous Y${}_3$Fe${}_5$O${}_{12}$
• Temperature dependence of the effective spin-mixing conductance probed with lateral non-local spin valves
• Magnon currents excited by the spin Seebeck effect in ferromagnetic EuS thin films
• Quantitative comparison of magnon transport experiments in three-terminal YIG/Pt nanostructures acquired via dc and ac detection techniques
• Enhancement of YIG$|$Pt spin conductance by local Joule annealing
• Impact of magnetic anisotropy on the magnon Hanle effect in $\alpha$-Fe${}_2$O${}_3$
• Spin Hall magnetoresistance in Pt/Y${}_3$Fe${}_5$O${}_{12}$ bilayers grown on Si and Gd${}_3$Ga${}_5$O${}_{12}$ substrates
• Spin Hall magnetoresistance at the altermagnetic insulator/Pt interface
• Nonreciprocal magnons in layered antiferromagnets VPX3(X =S,Se,Te)
• Perpendicularly magnetized YIG films with small Gilbert damping constant and anomalous spin transport properties
• Statistical characterization of the spin Hall magnetoresistance in YIG/Pt heterostructures
• Effect of interface quality on spin Hall magnetoresistance in Pt/MgFe${}_2$O${}_4$ bilayers
• Theory of drift-enabled control in nonlocal magnon transport
• Magnetically Ordered Insulators for Advanced Spintronics