Anisotropic Spin-Superfluid Magnet as a Long Josephson Junction

ORAL

Abstract

I will discuss spin transport in an insulating anisotropic ferromagnet and the insights that can be gained by mapping it onto the well studied long Josephson junction. This correspondence sheds light on the nonequilibrium phase diagram of a ferromagnetic strip subjected to spin injection at its ends. The mapping, under which magnetic-vortex solutions of a long Josephson junction correspond to domain-wall states in the ferromagnet, holds for stationary states up to a critical bias determined by the Landau criterion. In carrying over dynamic solutions, the ferromagnet requires additional considerations at the boundaries due to spin pumping. The Josephson junction analogy inspires spintronic applications based on magnetic insulators.

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Presenters

  • Daniel Hill

    Physics, University of California Los Angeles

Authors

  • Daniel Hill

    Physics, University of California Los Angeles

  • Se Kwon Kim

    Physics, University of California Los Angeles, Univ of California - Los Angeles, Physics and Astronomy, Univ of California - Los Angeles, Physics and Astronomy, University of California Los Angeles, Department of Physics and Astronomy, University of California Los Angeles

  • Yaroslav Tserkovnyak

    University of California, Los Angeles, Physics, University of California Los Angeles, Department of Physics and Astronomy, Univ of California - Los Angeles, Physics and Astronomy, University of California, Los Angeles, Univ of California - Los Angeles, Physics and Astronomy, Univ of California - Los Angeles, Physics and Astronomy, University of California Los Angeles, Department of Physics and Astronomy, University of California, Los Angeles, Physics, Univ of California - Los Angeles, Department of Physics and Astronomy, University of California Los Angeles