Dresden 2026 – scientific programme

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MA: Fachverband Magnetismus

MA 48: Magnonics II

MA 48.4: Talk

Thursday, March 12, 2026, 15:45–16:00, HSZ/0004

Temperature-dependent characterization of spin-wave transducers — •Julien Schäfer, Björn Heinz, and Philipp Pirro — Fachbereich Physik and Landesforschungszentrum OPTIMAS, RPTU Kaiserslautern- Landau, D-67663 Kaiserslautern, Germany

In radiofrequency technology, spin-wave-based (SW) communication building blocks, such as limiters and isolators, offer a low-energy alternative to traditional electronic devices. These magnonic communication devices consist of micrometer-sized antenna pairs that allow for tuning of the bandwidth and the frequency range through antenna shaping and adjustment of the applied magnetic field. Especially their compact size makes magnonic circuits attractive for on-chip integration, aiming to replace bulky electronic counterparts in crowded surroundings, such as cryostats and satellites. Following the objective to expand the SW transducer applicability to low-temperature environments, we study the propagation of SWs at various temperatures ranging from room temperature to 2 K. Understanding the impact of temperature-dependent variations in magnetic material parameters, including saturation magnetization and SW lifetime, on dispersive propagation characteristics is essential for engineering suitable devices. Our research provides insight into temperature-dependent insertion loss and isolation, consequently validating the applicability of SW transducers beyond room temperature conditions.

Keywords: Propagating spin-waves; Spin-wave transducers; Low temperature; YIG; Nonreciprocity