Universal Electromotive Force Induced by Domain Wall Motion

ORAL

Abstract

The electromotive force induced by a moving magnetic domain wall in a nanostrip has been calculated theoretically and detected experimentally. It is found that the emf depends only on the domain wall transformation frequency through a universal Josephson type relation, which is closely related to the topological nature of the domain wall. Our experimental measurements confirm the theoretical prediction.

*This work was supported by NSF, DOE and Welch Foundation.

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Authors

  • Qian Niu

    • The university of Texas at Austin
    • The University of Texas at Austin
    • UT Austin Dept of Physics
    • Department of Physics, The University of Texas, Austin, Texas
    • University of Texas at Austin

  • Shengyuan Yang

    • The University of Texas at Austin
    • UT Austin Dept of Physics

  • Geoffrey Beach

    • The University of Texas at Austin

  • Carl Knutson

    • The University of Texas at Austin

  • Di Xiao

    • The University of Texas at Austin

  • Maxim Tsoi

    • The University of Texas at Austin

  • James Erskine

    • The University of Texas at Austin
    • UT Austin Dept of Physics