Print Email Facebook Twitter Exchange magnetic field torques in YIG/Pt bilayers observed by the spin-Hall magnetoresistance Title Exchange magnetic field torques in YIG/Pt bilayers observed by the spin-Hall magnetoresistance Author Vlietstra, N. Shan, J. Castel, V. Youssef, J.B. Bauer, G.E.W. Van Wees, B.J. Faculty Applied Sciences Department QN/Quantum Nanoscience Date 2013-07-15 Abstract The effective field torque of an yttrium-iron-garnet (YIG) film on the spin accumulation in an attached platinum (Pt) film is measured by the spin-Hall magnetoresistance (SMR). As a result, the magnetization direction of a ferromagnetic insulating layer can be measured electrically. Experimental transverse and longitudinal resistances are well described by the theoretical model of SMR in terms of the direct and inverse spin-Hall effect, for different Pt thicknesses [3, 4, 8, and 35 nm]. Adopting a spin-Hall angle of Pt ?SH = 0.08, we obtain the spin diffusion length of Pt (? = 1.1±0.3?nm) as well as the real (Gr = (7±3)×1014???1m?2) and imaginary part (Gi = (5±3)×1013???1m?2) of the spin-mixing conductance and their ratio (Gr/Gi = 16±4). Subject diffusionexchange interactions (electron)ferromagnetic materialsgarnetsinterface magnetismmagnetic thin filmsmagnetisationmagnetoresistancespin dynamicsspin Hall effectyttrium compounds To reference this document use: http://resolver.tudelft.nl/uuid:1d49ff93-5d9c-42d3-86e9-8d7027b93d73 DOI https://doi.org/10.1063/1.4813760 Publisher American Institute of Physics ISSN 03-6951 Source https://doi.org/10.1063/1.4813760 Source Applied Physics Letters, 103 (3), 2013 Part of collection Institutional Repository Document type journal article Rights © 2013 American Institute of Physics Files PDF Bauer_2013.pdf 716.57 KB Close viewer /islandora/object/uuid:1d49ff93-5d9c-42d3-86e9-8d7027b93d73/datastream/OBJ/view