Magneto-Optical Study of Ultrathin TmIG/Pt Anistropy

ORAL

Abstract

Ferrimagnetic insulator based spintronics has the potential to produce both low-loss technologies as well as next generation skyrmion technologies. TmIG/Pt bilayers have been a great interest for their ability to produce high speed domain walls as well as their ability to be strain and DMI engineered for room temperature skyrmion applications. In order to further the understanding of this system, the sources of anisotropy in the ultrathin film limit must be well understood. In order to overcme the difficulty of low net magnetization and sample, which limits the use of magnetometry below several nanometers of thickness, we employ a highly sensitive magneto-optical technique to study the magnetic anisotropy. We investigate the magnitudes and effects of several contributions to magnetic anisotropy as a function of film thickness.

*We gratefully acknowledge the support from NSF MRSEC via grant DMR-1720595. This work was supported by the Center for Emergent Materials, an NSF MRSEC, under Grant No. DMR-2011876. Chang acknowledges support from a UT-Portugal collaboration grant.

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Presenters

  • Timothy N Nunley

    • University of Texas at Austin

Authors

  • Timothy N Nunley

    • University of Texas at Austin

  • Side Guo

    • Ohio State Univ - Columbus

  • Liang Juan Chang

    • The University of Texas at Austin
    • University of Texas

  • David Lujan

    • University of Texas at Austin

  • Jeongheon Choe

    • University of Texas at Austin

  • Shang-Fan Lee

    • Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan
    • Institute of Physics, Academia Sinica

  • Fengyuan Yang

    • Ohio State Univ - Columbus

  • Xiaoqin (Elaine) Li

    • University of Texas at Austin