Regensburg 2022 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 13: Magnonics 1
MA 13.3: Vortrag
Dienstag, 6. September 2022, 10:00–10:15, H43
Finite-element micromagnetic modeling of spin-wave propagation with the open-source package TetraX — •Lukas Körber1,2, Gwendolyn Quasebarth1,2, Alexander Hempel1,2, Andreas Otto2, Jürgen Fassbender1,2, and Attila Kákay1 — 1Helmholtz-Zentrum Dresden - Rossendorf, Dresden Germany — 2Fakultät Physik, Technische Universität Dresden
We present a finite-element-method (FEM) dynamic-matrix approach to efficiently calculate the dispersion and spatial mode profiles of spin waves propagating in waveguides with arbitrary cross section, where the equilibrium magnetization is invariant along the propagation direction. This is achieved by solving numerically a linearized version of the equation of motion of the magnetization only in a single cross section of the waveguide at hand. To compute the dipolar field, we present an extension of the well-known Fredkin-Koehler method to plane waves. The presented dynamic-matrix approach is implemented within our recently published open-source micromagnetic modeling package TetraX [1] which aims to provide user friendly and versatile FEM workflows for the magnonics community (not only for magnonics community, but FEM simulations in general), covering several classes of sample geometries and, in the near future, also antiferromagnets. As a brief introduction, this talk will include a short live-demo of TetraX.
[1] https://gitlab.hzdr.de/micromagnetic-modeling/tetrax