Dresden 2026 – scientific programme
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MA: Fachverband Magnetismus
MA 48: Magnonics II
MA 48.9: Talk
Thursday, March 12, 2026, 17:15–17:30, HSZ/0004
Modelling spin-wave interference with electromagnetic leakage in micron-scaled spin-wave transducers — •Felix Kohl1, Björn Heinz1, Matthias Wagner1, Christoph Adelmann2, Florin Ciubotaru2, and Philipp Pirro1 — 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, RPTU Kaiserslautern- Landau, D-67663 Kaiserslautern, Germany — 2imec, Kapeldreef 75, 3001 Heverlee, Belgium
Utilization of spin-wave transducers for radio-frequency signal processing provides significant potential due to intrinsic tunability, scalability and nonlinearity. However, such components can exhibit passband ripples, distortions in their transmission band, diminishing their operation and functionality. In this work, we experimentally identify the interference with the electromagnetic crosstalk (EM) as a major source of passband ripples and provide a simple analytic model to predict its impact on device operation. The results are in good agreement with the experimental observation. In addition, we test multiple transducer geometries to identify operational regimes and minimize the EM impact. Finally, the effect of nonlinear device operation on the interference with the EM is addressed, which is of relevance for the exploitation of the spin-waves intrinsic nonlinear traits.
Keywords: Spin-wave transducer; Spin-wave spectroscopy; Group delay; Delay lines