Print Email Facebook Twitter Current-induced magnetization dynamics in two magnetic insulators separated by a normal metal Title Current-induced magnetization dynamics in two magnetic insulators separated by a normal metal Author Skarsvag, H. Bauer, G.E.W. Brataas, A. Faculty Applied Sciences Department QN/Quantum Nanoscience Date 2014-08-04 Abstract We study the dynamics of spin valves consisting of two layers of magnetic insulators separated by a normal metal in the macrospin model. A current through the spacer generates a spin Hall current that can actuate the magnetization via the spin-transfer torque. We derive expressions for the effective Gilbert damping and the critical currents for the onset of magnetization dynamics including the effects of spin pumping that can be tested by ferromagnetic resonance experiments. The current generates an amplitude asymmetry between the in-phase and out-of-phase modes. We discuss superlattices of stacked films of metals and magnetic insulators. To reference this document use: http://resolver.tudelft.nl/uuid:c5959049-b3b4-46d8-9206-be815e57d2e2 DOI https://doi.org/10.1103/PhysRevB.90.054401 Publisher American Physical Society ISSN 1098-0121 Source http://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.054401 Source Physical Review B, 90, 2014 Part of collection Institutional Repository Document type journal article Rights © 2014 American Physical Society Files PDF Bauer_2014.pdf 1.19 MB Close viewer /islandora/object/uuid:c5959049-b3b4-46d8-9206-be815e57d2e2/datastream/OBJ/view