2017/09/06 by Matthias Pernpeintner, Pernpeintner, Matthias, Akashdeep Kamra +5
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties and Applications #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Quantum and electron transport phenomena
paper · pdf · doi:10.48550/arxiv.1709.01820
openalex publication_date 2017/09/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Spin transport in electric conductors is largely determined by two material\nparameters - spin diffusion length and spin Hall angle. In metals, these are\ntypically determined indirectly by probing magnetoresistance in magnet/metal\nheterostructures, assuming knowledge of the interfacial properties. We suggest\nprofiling the charge current induced spin Hall spin accumulation in metals, via\ndetection of the magnetic stray field generated by the associated static\nmagnetization, as a direct means of determining spin transport parameters. We\nevaluate the spatial profile of the stray field as well as the Oersted field\ngenerated by the charge current. We thus demonstrate that such a charge current\ninduced spin accumulation is well within the detection limit of contemporary\ntechnology. Measuring the stray fields may enable direct access to spin-related\nproperties of metals paving the way for a better and consistent understanding\nof spin transport therein.\n