Spin dynamics modulated by collective magnetization reversal in artificial spin ice

ORAL

Abstract

Magnon spintronics aims at developing novel functional devices that combine magnonic and electronic spin transport phenomena. In particular, magnetic metamaterials such as artificial spin ice and magnonic crystals offer unique possibilities in magnon spintronics \footnote{M. B. Jungfleisch et al., Phys. Rev. B 93, 100401(R) (2016).} We recently demonstrated the detection of Oersted-field driven spin dynamics in connected artificial spin-ice networks made of bilayer Ni80Fe20/Pt with different lattice parameters by dc electrical means \footnote{M. B. Jungfleisch et al., Appl. Phys. Lett. 108, 052403 (2016).}.
Here, we show spin-torque ferromagnetic resonance in square artificial spin-ice systems and correlate our observations to magnetotransport studies in those type of networks \footnote{M. B. Jungfleisch et al., arXiv:1710.10534 (2017).}. The experimental findings are described using a simulation approach that highlights the importance of the correlated dynamics response of the magnetic system. Our results open the possibility of designing reconfigurable microwave oscillators and magnetoresistive devices based on connected networks of nanomagnets.

*This work was supported by the U.S. Department of Energy, Office of Science, Materials Science and Engineering Division.

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Presenters

  • Matthias Benjamin Jungfleisch

    • Materials Science Division, Argonne National Laboratory
    • University of Delaware, Newark, DE; Argonne National Laboratory
    • Argonne National Laboratory

Authors

  • Matthias Benjamin Jungfleisch

    • Materials Science Division, Argonne National Laboratory
    • University of Delaware, Newark, DE; Argonne National Laboratory
    • Argonne National Laboratory

  • Joseph Sklenar

    • Univ of Illinois - Urbana
    • University of Illinois Urbana-Champaign
    • University of Illinois at Urbana–Champaign

  • Junjia Ding

    • Materials Science Division, Argonne National Laboratory
    • Argonne National Laboratory

  • Jungsik Park

    • University of Illinois Urbana-Champaign

  • John Pearson

    • Materials Science Division, Argonne National laboratory
    • Materials Science Division, Argonne National Laboratory
    • Argonne National Laboratory
    • Argonne Natl Lab
    • Material Science Division, Argonne National Laboratory

  • Valentyn Novosad

    • Argonne Natl Lab
    • Materials Science Division, Physics Division, Argonne National Laboratory
    • Materials Science Division, Argonne National Laboratory
    • Argonne National Laboratory

  • Peter Schiffer

    • Applied Physics, Yale University
    • Yale University, New Haven, CT; University of Illinois Urbana-Champaign
    • University of Illinois at Urbana–Champaign

  • Axel Hoffmann

    • Materials Science Division, Argonne National Laboratory
    • Material Science Division , Argonne National Laboratory
    • Argonne National Laboratory
    • Material Science Division, Argonne National Laboratory