Spin Hall magnetoresistance at Pt/CoFe2O4 interfaces and texture effects

Abstract

We report magnetoresistance measurements on thin Pt bars grown on epitaxial (001) and (111) CoFe2O4 (CFO) ferrimagnetic insulating films. The results can be described in terms of the recently discovered spin Hall magnetoresistance (SMR). The magnitude of the SMR depends on the interface preparation conditions, being optimal when Pt/CFO samples are prepared in situ, in a single process. The spin-mixing interface conductance, the key parameter governing SMR and other relevant spin-dependent phenomena such as spin pumping or spin Seebeck effect, is found to be different depending on the crystallographic orientation of CFO, highlighting the role of the composition and density of magnetic ions at the interface on spin mixing.

13 pages, 5 figures

References in corpus (12)

• Direct electronic measurement of the spin Hall effect
• Spin Seebeck insulator
• Theory of spin Hall magnetoresistance
• Spin Pumping and Inverse Spin Hall Effect in Platinum: The Essential Role of Spin-Memory Loss at Metallic Interfaces
• Quantitative study of the spin Hall magnetoresistance in ferromagnetic insulator/normal metal hybrids
• Experimental test of the spin mixing interface conductivity concept
• Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
• Exchange magnetic field torques in YIG/Pt bilayers observed by the spin-Hall magnetoresistance
• Control of spin injection by direct current in lateral spin valves
• Contribution of defects to the spin relaxation in copper nanowires
• Spin-dependent Seebeck effect in non-local spin valve devices
• Giant enhancement of spin pumping efficiency using Fe3Si ferromagnet

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• Theory of spin Hall magnetoresistance (SMR) and related phenomena
• Magnetoresistance of heavy and light metal/ferromagnet bilayers
• Orbital Hanle Magnetoresistance in a 3d Transition Metal
• Spin-Hall magnetoresistance and spin Seebeck effect in spin-spiral and paramagnetic phases of multiferroic CoCr2O4 films
• Competing effects at Pt/YIG interfaces: spin Hall magnetoresistance, magnon excitations and magnetic frustration
• Evolution of the Spin Hall Magnetoresistance in Cr${}_2$O${}_3$/Pt bilayers close to the Néel temperature
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• Theory of Spin Hall Magnetoresistance from a Microscopic Perspective
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• Electrical detection of spiral spin structures in Pt|Cu_2OSeO_3 heterostructures
• Magnetic Proximity Effect in Pt/CoFe2O4 Bilayers
• Absence of magnetic proximity effects in magnetoresistive Pt/CoFe2O4 hybrid interfaces
• Synthetic antiferromagnetic coupling between ultra-thin insulating garnets
• Observation of spin-orbit magnetoresistance in metallic thin films on magnetic insulators
• Spin Hall magnetoresistance in antiferromagnetic insulators
• Magnetoresistance in Hybrid Pt/CoFe2O4 Bilayers Controlled by Competing Spin Accumulation and Interfacial Chemical Reconstruction
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• Enhanced magnon spin transport in NiFe${}_2$O${}_4$ thin films on a lattice-matched substrate
• Crystal field effects on spin pumping
• Thermal generation of spin current in epitaxial CoFe2O4 thin films
• Modulation of pure spin currents with a ferromagnetic insulator
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• Current-induced spin torque resonance of magnetic insulators affected by field-like spin-orbit torques and out-of-plane magnetizations
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• Absence of significant spin current generation in Ti/FeCoB bilayers with strong interfacial spin-orbit coupling
• Isothermal anisotropic magnetoresistance in antiferromagnetic metallic IrMn
• Current-Induced Magnetization Control in Insulating Ferrimagnetic Garnets
• Extraordinary Hall resistance and unconventional magnetoresistance in Pt/LaCoO3 hybrids
• Anomalous Hall-like transverse magnetoresistance in Au thin films on Y${}_3$Fe${}_5$O${}_{12}$
• Current direction anisotropy of the spin Hall magnetoresistance in nickel ferrite thin films with bulk-like magnetic properties
• All-electrical Magnon Transport Experiments in Magnetically Ordered Insulators
• Stability of the novel interorbital-hopping mechanism for ferromagnetism in multi-orbital Hubbard models
• 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
• Investigation of anomalous-Hall and spin-Hall effects of antiferromagnetic IrMn sandwiched by Pt and YIG layers
• Magnon currents excited by the spin Seebeck effect in ferromagnetic EuS thin films
• Spin Hall magnetoresistance in Pt/Y${}_3$Fe${}_5$O${}_{12}$ bilayers grown on Si and Gd${}_3$Ga${}_5$O${}_{12}$ substrates
• Spin current transport in hybrid Pt / multifunctional magnetoelectric Ga0.6Fe1.4O3 bilayers
• Spin Hall magnetoresistance at the altermagnetic insulator/Pt interface
• Effect of Quantum Tunneling on Spin Hall Magnetoresistance
• Effect of interface quality on spin Hall magnetoresistance in Pt/MgFe${}_2$O${}_4$ bilayers
• Crystal orientation dependent spin pumping in Bi0.1Y2.9Fe5O12/Pt interface