Print Email Facebook Twitter Current-induced spin torque resonance of a magnetic insulator Title Current-induced spin torque resonance of a magnetic insulator Author Schreier, M. Chiba, T. Niedermayr, A. Lotze, J. Huebl, H. Geprags, S. Takahashi, S. Bauer, G.E.W. Gross, R. Goennenwein, S.T.B. Faculty Applied Sciences Department QN/Quantum Nanoscience Date 2015-10-09 Abstract We report the observation of current-induced spin torque resonance in yttrium iron garnet/platinum bilayers. An alternating charge current at GHz frequencies in the platinum gives rise to dc spin pumping and spin Hall magnetoresistance rectification voltages, induced by the Oersted fields of the ac current and the spin Hall effect-mediated spin transfer torque. In ultrathin yttrium iron garnet films, we observe spin transfer torque actuated magnetization dynamics which are significantly larger than those generated by the ac Oersted field. Spin transfer torques thus efficiently couple charge currents and magnetization dynamics also in magnetic insulators, enabling charge current-based interfacing of magnetic insulators with microwave devices. To reference this document use: http://resolver.tudelft.nl/uuid:8ad94db1-7160-4fc3-8231-4055f71326d8 Publisher American Physical Society ISSN 1098-0121 Source https://doi.org/10.1103/PhysRevB.92.144411 Source Physical Review B, 92 (14), 2015 Part of collection Institutional Repository Document type journal article Rights © 2015 American Physical Society Files PDF 321175.pdf 456.42 KB Close viewer /islandora/object/uuid:8ad94db1-7160-4fc3-8231-4055f71326d8/datastream/OBJ/view