Nature of magnetotransport in metal/insulating-ferromagnet heterostructures: Spin Hall magnetoresistance or magnetic proximity effect

Abstract

We study the anomalous Hall-like effect (AHLE) and the effective anisotropic magnetoresistance (EAMR) in antiferromagnetic γ -IrMn3/Y3Fe5O12(YIG) and Pt/YIG heterostructures. For γ -IrMn3/YIG, the EAMR and the AHLE resistivity change sign with temperature due to the competition between the spin Hall magnetoresistance (SMR) and the magnetic proximity effect (MPE) induced by the interfacial antiferromagnetic uncompensated magnetic moment. In contrast, for Pt/YIG the AHLE resistivity changes sign with temperature whereas no sign change is observed in the EAMR. This is because the MPE and the SMR play a dominant role in the AHLE and the EAMR, respectively. As new types of galvanomagnetic property, the AHLE and the EAMR have proved vital in disentangling the MPE and the SMR in metal/insulating-ferromagnet heterostructures.

References in corpus (7)

• Direct electronic measurement of the spin Hall effect
• Theory of spin Hall magnetoresistance
• Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
• Investigation of induced Pt magnetic polarization in Pt/Y3Fe5O12 bilayers
• Anomalous Hall effect in YIG$|$Pt bilayers
• Anomalous Nernst and Hall effects in magnetized platinum and palladium
• Planar Hall effect in Y3Fe5O12(YIG)/IrMn films

Cited by in corpus (17)

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• Theory of spin Hall magnetoresistance (SMR) and related phenomena
• The effect of inserted NiO layer on spin-Hall magnetoresistance in Pt/NiO/YIG heterostructures
• Exploring interfacial exchange coupling and sublattice effect in heavy metal/ferrimagnetic insulator heterostructures using Hall measurements, x-ray magnetic circular dichroism, and neutron reflectometry
• Magnetic Proximity Effect in Pt/CoFe2O4 Bilayers
• Anisotropic Magnetoresistance and Nontrivial Spin Hall Magnetoresistance in Pt/$\alpha$-Fe${}_2$O${}_3$ Bilayers
• Interfacial Dzyaloshinskii-Moriya Interaction of Antiferromagnetic Materials
• Tunable and Enhanced Rashba Spin-Orbit Coupling in Iridate-Manganite Heterostructures
• Sputtered terbium iron garnet films with perpendicular magnetic anisotropy for spintronic applications
• Disclosing antiferromagnetism in tetragonal Cr2O3 by electrical measurements
• Strain-Tunable Magnetic Compensation Temperature of Epitaxial Tb${}_3$Fe${}_5$O${}_{12}$ Thin Films
• Spin current transport in hybrid Pt / multifunctional magnetoelectric Ga0.6Fe1.4O3 bilayers
• Hysteresis and training effect in the electric control of spin current in Pt/Y3Fe5O12 heterostructures