Structural sensitivity of the spin Hall magnetoresistance in antiferromagnetic thin films

Abstract

Reading the magnetic state of antiferromagnetic (AFM) thin films is key for AFM spintronic devices. We investigate the underlying physics behind the spin Hall magnetoresistance (SMR) of bilayers of platinum and insulating AFM hematite (α-Fe2O3) and find an SMR efficiency of up to 0.1%, comparable to ferromagnetic based structures. To understand the observed complex SMR field dependence, we analyse the effect of misalignments of the magnetic axis that arise during growth of thin films, by electrical measurements and direct magnetic imaging, and find that a small deviation can result in significant signatures in the SMR response. This highlights the care that must be taken when interpreting SMR measurements on AFM spin textures.

References in corpus (21)

• Antiferromagnetic spintronics
• Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect
• Theory of spin Hall magnetoresistance
• Electrically controlled long-distance spin transport through an antiferromagnetic insulator
• Spin Hall magnetoresistance in antiferromagnet/heavy-metal heterostructures
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• Full angular dependence of the spin Hall and ordinary magnetoresistance in epitaxial antiferromagnetic NiO(001)/Pt thin films
• Current-Induced Dynamics and Chaos of Antiferromagnetic Bimerons
• Spin Hall Magnetoresistance in a Canted Ferrimagnet
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• Propagation length of antiferromagnetic magnons governed by domain configurations
• Large spin Hall magnetoresistance in antiferromagnetic α-Fe2O3/Pt heterostructures
• Evolution of the Spin Hall Magnetoresistance in Cr${}_2$O${}_3$/Pt bilayers close to the Néel temperature
• Negative spin Hall magnetoresistance in antiferromagnetic Cr2O3/Ta bilayer at low temperature region
• Anisotropic Magnetoresistance and Nontrivial Spin Hall Magnetoresistance in Pt/$\alpha$-Fe${}_2$O${}_3$ Bilayers
• Spin Hall magnetoresistance as a probe for surface magnetization in Pt/CoFe${}_2$O${}_4$ bilayers
• Spin transport across antiferromagnets induced by the spin Seebeck effect
• Spin Hall magnetoresistance in antiferromagnet/normal metal bilayers
• Spin-transfer Antiferromagnetic Resonance
• Spin structure and spin Hall magnetoresistance of epitaxial thin films of the insulating non-collinear antiferromagnet SmFeO${}_3$
• Magnetic states at the surface of alpha-Fe2O3 thin films doped with Ti, Zn or Sn

Cited by in corpus (15)

• Skyrmion pinning energetics in thin film systems
• Homochiral antiferromagnetic merons, antimerons and bimerons realized in synthetic antiferromagnets
• Exceptional sign changes of the non-local spin Seebeck effect in antiferromagnetic hematite
• Emergence of zero-field non-synthetic single and interchanged antiferromagnetic skyrmions in thin films
• Antiferromagnetic insulatronics: spintronics in insulating 3d metal oxides with antiferromagnetic coupling
• Altermagnetic splitting of magnons in hematite ($\alpha$-Fe${}_2$O${}_3$)
• Magnetic properties of hematite revealed by an ab initio parameterized spin model
• Role of substrate clamping on anisotropy and domain structure in the canted antiferromagnet $\alpha$-Fe${}_2$O${}_3$
• Revealing the Altermagnetism in Hematite via XMCD Imaging and Anomalous Hall Electrical Transport
• Magnon-mediated interlayer coupling in an all-antiferromagnetic junction
• Spatially reconfigurable topological textures in freestanding antiferromagnetic nanomembranes
• A route towards stable homochiral topological textures in A-type antiferromagnets
• Magnon Transport in the Presence of Antisymmetric Exchange in a Weak Antiferromagnet
• Anisotropic Field Suppression of Morin Transition Temperature in Epitaxially Grown Hematite Thin Films
• Giant orbital magnetoresistance in the antiferromagnet CoO driven by dynamic orbital angular momentum interaction