What is it about?

Spin waves are the fundamental excitations in magnetically ordered media. Here, we present a numerical to efficiently calculate the dispersion and spatial profiles of spin waves propagating along magnetic waveguides with an arbitrarily shaped cross section and any distribution of the equilibrium magnetization within this cross section.

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Why is it important?

In magnetism, there is an increasing interest in studying the effects of non-trivial sample geometry and curvature on magnetism and magnetization dynamics. With increasing geometrical complexity, analytical studies become cumbersome and computer simulations become costly. Our numerical method has been developed with these challenges in mind and will boost the study of spin-wave propagation in waveguides with complex geometry.


It took a long time to develop this method. At some point I was unsure if we would succeed at all. However, I was always convinced that it would be a jack-of-all-trades device for the studies during my PhD in curvilinear magnetization dynamics. Now, I use this method almost every day. Having this paper publishes makes me very proud, lastly, also because it has been selected for the cover of the September 2021 issue in AIP Advances.

Lukas Körber
Helmholtz-Zentrum Dresden - Rossendorf

Read the Original

This page is a summary of: Finite-element dynamic-matrix approach for spin-wave dispersions in magnonic waveguides with arbitrary cross section, AIP Advances, September 2021, American Institute of Physics,
DOI: 10.1063/5.0054169.
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