Regensburg 2025 – scientific programme

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MA: Fachverband Magnetismus

MA 20: Magnonics II

MA 20.11: Talk

Wednesday, March 19, 2025, 12:15–12:30, H16

Uniaxial strain response of antiferromagnetic magnons — •Manuel Knauft, Arthur von U.-S. Schwark, Yiran Liu, Lichen Wang, Sajna Hameed, Matteo Minola, and Bernhard Keimer — Max Planck Institute for Solid State Research, Stuttgart, Germany

With the suggested paradigm shift away from conventional transistors towards lower loss devices, magnonics has attracted considerable attention in recent years. Generation, manipulation and detection of magnons are prerequisites for successful integration into microstructured chips. We will present ideas and results of using uniaxial strain to control magnon behavior in perovskite antiferromagnets. In particular, recent work on iridates has shown that the magnon energy can be varied by as much as 40 % with small uniaxial strain of about 0.1 % [1]. Building on those findings, we discuss alternative approaches. Furthermore, through spatially inhomogeneous strain environments, we will also demonstrate ideas of guiding magnons as investigated using finite element simulation and confocal Raman scattering.

[1] Kim et al., Nat. Commun. 13, 6674 (2022)

Keywords: Magnonics; Antiferromagnetism; Iridates