Quantitative study of the spin Hall magnetoresistance in ferromagnetic insulator/normal metal hybrids
By M. Althammer, S. Meyer, H. Nakayama, Michael Schreier, S. Altmannshofer, M. Weiler, H. Huebl, S. Geprags, M. Opel, R. Gross and 11 more. 2013
398 citations recorded by the source corpus.
We experimentally investigate and quantitatively analyze the spin Hall magnetoresistance effect in ferromagnetic insulator/platinum and ferromagnetic insulator/nonferromagnetic metal/platinum hybrid structures. For the ferromagnetic insulator, we use either yttrium iron garnet, nickel ferrite, or magnetite and for the nonferromagnet, copper or gold. The spin Hall magnetoresistance effect is theoretically ascribed to the combined action of spin Hall and inverse spin Hall effect in the platinum metal top layer. It therefore should characteristically depend upon the orientation of the magnetization in the adjacent ferromagnet and prevail even if an additional, nonferromagnetic metal layer is inserted between Pt and the ferromagnet. Our experimental data corroborate these theoretical conjectures. Using the spin Hall magnetoresistance theory to analyze our data, we extract the spin Hall angle and the spin diffusion length in platinum. For a spin-mixing conductance of 4×1014 ??1m?2, we obtain a spin Hall angle of 0.11±0.08 and a spin diffusion length of (1.5±0.5) nm for Pt in our thin-film samples
Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/4884d483c4dfd7066eb157f9d976af9977ca37c0
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In Atomic and Molecular Physics, and Optics
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Citations in the corpus
- Electrical Detection of Magnetization Dynamics via Spin Rectification Effects (2016, background): “Since the initial work on YIG/Pt samples, different FMI/NM hybrid structures have also been studied using for example Fe3O4, NiFe2O4 [139] and CoFe2O4 [145] as FMI and Au, Cu [139] and Ta [138] as NM.”
- Critical suppression of spin Seebeck effect by magnetic fields (2015, methodology): “To do this, we measured the H dependence of the spin-Hall magnetoresistance (SMR) [20, 57–62] in a similar Pt/YIG-slab system, in which the Pt layer is patterned into a Hall-bar shape [see Fig.”
- Spin Hall Effects in Metals (2013, background): “based on more samples yields % and nm [112].”