Ferromagnet dynamics in a driven spin valve

ORAL

Abstract

The magnetoresistance of a ferromagnet/normal-metal/ferromagnet trilayer depends on the relative orientation of the two magnetic moments. We analyze out-of-plane precession of the magnetization for a soft ferromagnetic layer in such a geometry, where the system is driven by an alternating charge current. We consider the effect of both spin-torque and spin-pumping on the magnetization dynamics and find that these have signatures in the magnetoresistance.

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Authors

  • Joern N. Kupferschmidt

  • Shaffique Adam

  • Piet W. Brouwer

    Cornell University, Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY, 14853, Laboratory of Atomic and Solid State Physics, Cornell University, Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY 14853-2501