Modulation of pure spin currents with a ferromagnetic insulator

Abstract

We propose and demonstrate spin manipulation by magnetically controlled modulation of pure spin currents in cobalt/copper lateral spin valves, fabricated on top of the magnetic insulator Y${}_3$Fe${}_5$O${}_{12}$ (YIG). The direction of the YIG magnetization can be controlled by a small magnetic field. We observe a clear modulation of the non-local resistance as a function of the orientation of the YIG magnetization with respect to the polarization of the spin current. Such a modulation can only be explained by assuming a finite spin-mixing conductance at the Cu/YIG interface, as it follows from the solution of the spin-diffusion equation. These results open a new path towards the development of spin logics.

arXiv comment5 pages and 4 figures + supplemental material (10 pages, 7 figures)

References in corpus (24)

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• Spin Seebeck insulator
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• Theory of spin Hall magnetoresistance
• Spin Pumping and Inverse Spin Hall Effect in Platinum: The Essential Role of Spin-Memory Loss at Metallic Interfaces
• Comparative Measurements of Inverse Spin Hall and Magnetoresistance in YIG|Pt and YIG|Ta
• Finite-element theory of transport in ferromagnet-normal metal systems
• Spin Injection and Detection in Magnetic Nanostructures
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• Electronic spin transport in graphene field effect transistors
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• Giant enhancement of spin accumulation and long-distance spin precession in metallic lateral spin valves
• Spin mixing conductance at a well-controlled platinum/yttrium iron garnet interface
• Platinum thickness dependence of the inverse spin-Hall voltage from spin pumping in a hybrid YIG/Pt system
• Optimization of the yttrium iron garnet/platinum interface for spin pumping-based applications
• Spin Hall magnetoresistance at Pt/CoFe2O4 interfaces and texture effects
• Contribution of defects to the spin relaxation in copper nanowires
• Temperature dependence of spin polarization in ferromagnetic metals using lateral spin valves
• Enhanced spin-flip scattering at the surface of copper in lateral spin valves
• Spin Seebeck power generators

Cited by in corpus (20)

• Colloquium: Nonequilibrium effects in superconductors with a spin-splitting field
• Hanle Magnetoresistance in Thin Metal Films with Strong Spin-Orbit Coupling
• Theory of spin Hall magnetoresistance (SMR) and related phenomena
• Thermal, electric and spin transport in superconductor/ferromagnetic-insulator structures
• Strong modulation of spin currents in bilayer graphene by static and fluctuating proximity exchange fields
• Competing effects at Pt/YIG interfaces: spin Hall magnetoresistance, magnon excitations and magnetic frustration
• Spin Seebeck Power Conversion
• Synthetic antiferromagnetic coupling between ultra-thin insulating garnets
• Spin Hall magnetoresistance as a probe for surface magnetization in Pt/CoFe${}_2$O${}_4$ bilayers
• Control of spin current by a magnetic YIG substrate in NiFe/Al nonlocal spin valves
• Anomalous Hall-like transverse magnetoresistance in Au thin films on Y${}_3$Fe${}_5$O${}_{12}$
• Independent geometrical control of spin and charge resistances in curved spintronics
• Temperature dependence of the effective spin-mixing conductance probed with lateral non-local spin valves
• Detection of the interfacial exchange field at a ferromagnetic insulator-nonmagnetic metal interface with pure spin currents
• Weak de-localization in graphene on a ferromagnetic insulating film
• Nonlocal magnetolectric effects in diffusive conductors with spatially inhomogeneous spin-orbit coupling
• Effect of the interface resistance in non-local Hanle measurements
• Variational approach to the stationary spin-Hall effect
• Modulation of Spin Accumulation by Nanoscale Confinement using Electromigration in a Metallic Lateral Spin Valve
• Quantification of interfacial spin-charge conversion in metal/insulator hybrid structures by generalized boundary conditions