Localized Spin-wave Edge Modes in a Tapered V[TCNE]<sub><i>x~2</i></sub> Thin-film

ORAL

Abstract

In magnonics, many researches have been conducted to study spin-waves in a thin film that has a perfect rectangular form. However, it is not always possible to achieve such an ideal rectangular structure depending on patterning techniques. For instance, a V[TCNE]x~2 thin-film deposited by using a CVD method has taper around its edges. In this presentation, we investigate and report characteristics of dipole interaction induced spin-wave modes in a thin-film of a trapezoidal cross-section. We used a micromagnetic simulation program; MUMAX3[1] to simulate spin-wave spectra and corresponding mode profiles of the thin-film. For material parameters, we referred V[TCNE]x~2 which is a emerging magnetic material that has low damping and narrow linewidth [2]. Our results provide understanding of how tapered edges influence spin-waves and suggest possible applications of localied edge modes.

[1] Vansteenkiste et al., AIP Adv. 4, 107133 (2014).
[2] N. Zhu, X. Zhang, I. H. Froning, M. E. Flatté, E. Johnston-Halperin, and H. X. Hong, Appl. Phys. Lett. 109, 082402 (2016)

*We acknowledge funding from NSF Grant No. DMR-1808742.

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Presenters

  • Kwangyul Hu

    • Department of Physics and Astronomy, The University of Iowa

Authors

  • Kwangyul Hu

    • Department of Physics and Astronomy, The University of Iowa

  • Michael Flatté

    • Department of Physics and Astronomy, The University of Iowa
    • University of Iowa
    • Department of Physics, University of Iowa
    • Physics and Astronomy, Univ of Iowa
    • Department of Physics and Astronomy, University of Iowa, Department of Applied Physics, Eindhoven University of Technology
    • Department of Physics, University of Iowa; Department of Applied Physics, Eindhoven University of Technology
    • Univ. of Iowa/Eindoven University of Technology
    • Department of Physics and Astronomy, University of Iowa
    • Univ of Iowa