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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)

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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