Berlin 2024 – scientific programme

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MA: Fachverband Magnetismus

MA 16: Magnonics I

MA 16.7: Talk

Tuesday, March 19, 2024, 11:15–11:30, EB 107

Fine-Tuning Spin-Wave Transducers for Improved Efficiency and Sensitivity — •Felix Kohl, Björn Heinz, and Philipp Pirro — Fachbereich Physik and Landesforschungszentrum OPTIMAS, RPTU Kaiserslautern-Landau, 67663 Kaiserslautern, Germany

Current research in magnonics is addressing the transition from potential feasibility to functional applicability, with a particular focus on improving the efficiency of integrated spin-wave transducers, including spin-wave excitation as well as detection. Although spin-wave transducers relying on spin-wave excitation by dynamic Oersted fields are widely used, their inefficiency raises the need for significant enhancements. In a comprehensive study, we evaluate the achieved levels of efficiency under consideration of various key parameters such as the shape of the transducer antenna, magnetic material properties and spin-wave dispersion. By means of propagating spin-wave spectroscopy we measure spin-wave transmission and interpret results, providing valuable insights into the system's behavior. The acquired results, coupled with theoretic modelling of the systems, serve as a guiding framework for the optimization of transducers. Utilizing this framework, optimized transducers are fabricated and tested for their efficiency. This work represents a crucial step towards realizing the full potential of magnonics in practical applications. This research is funded by the European Union within HORIZON-CL4-2021-DIGITAL-EMERGING-01 (No. 101070536,MandMEMS).

Keywords: Magnonics; Spin waves; Magnonics application; Spin-wave transducer; Energy efficiency