Transition magnon modes in thin ferromagnetic nanogratings

S. M. Kukhtaruk, A. W. Rushforth, F. Godejohann, A. V. Scherbakov, and M. Bayer
Phys. Rev. B 106, 064411 – Published 9 August 2022
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Abstract

This work presents micromagnetic simulations in ferromagnetic nanogratings for the full range of directions of an applied in-plane external magnetic field. We focus on the modification of the magnon mode characteristics when the magnetic field orientation is gradually changed between the classical Damon-Eshbach and backward-volume geometries. We found that in a specific range of field directions, the magnon mode parameters differ significantly from the parameters in the classical cases; namely, the modes are characterized by complex spatial distributions and have low group velocities. The center of this range corresponds to the direction of the external magnetic field, which gives the maximal nonuniform distribution of the static magnetization in the nanogratings.

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  • Received 24 June 2022
  • Accepted 20 July 2022

DOI:https://doi.org/10.1103/PhysRevB.106.064411

©2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

S. M. Kukhtaruk1,2,*, A. W. Rushforth3, F. Godejohann1, A. V. Scherbakov1, and M. Bayer1

  • 1Experimentelle Physik 2, Technische Universität Dortmund, Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
  • 2Department of Theoretical Physics, V. E. Lashkaryov Institute of Semiconductor Physics, 03028 Kyiv, Ukraine
  • 3School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom

  • *serhii.kukhtaruk@tu-dortmund.de

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Issue

Vol. 106, Iss. 6 — 1 August 2022

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