2021/11/22 by Charles Weiss, Weiss, Charles, Matthieu Bailleul +3
Engineering · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Applied Physics (physics.app-ph) #Electromagnetic Simulation and Numerical Methods #FOS: Physical sciences #Magnetic properties of thin films #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
paper · pdf · doi:10.48550/arxiv.2111.11106
openalex publication_date 2021/11/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A fully self-consistent model for the excitation and reception of\nmagnetostatic surface waves in thin ferromagnetic films by a set of coplanar\nantennas was developed and implemented numerically. The model assumes that the\nferromagnetic film is highly conducting and is interfaced with non-magnetic\nmetallic films, but is also suitable for modeling magneto-insulating films.\nPerpendicular magnetic anisotropy and Dzyaloshinskii-Moriya interaction can be\nincluded at both interfaces of the ferromagnetic layer. The model calculates\nthe coupling impedances between the different strips constituting the coplanar\nantennas. In some situations, this leads to a frequency non-reciprocity between\ncounter-propagating waves even in the case of no asymmetry in the spin-wave\ndispersion relation. Several intermediate results of the model were checked\nnumerically and the final output of the model, given as the scattering\nparameters, S11, S12, and S21 of the antenna system, were in\ngood agreement with previous experimental studies.\n