Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 52: Poster Magnetism III
MA 52.7: Poster
Donnerstag, 12. März 2026, 15:00–17:00, P4
Electric Control of Magnon Phase via the Aharonov–Casher Effect — •Gabriel Schwöbel1, Rostyslav O. Serha2, Matthias R. Schweitzer1, Vitaliy I. Vasyuchka1, Mathias Weiler1, Burkard Hillebrands1, and Aleksander A. Serga1 — 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, RPTU Kaiserslautern-Landau, Kaiserslautern, Germany — 2Faculty of Physics, University of Vienna, Vienna, Austria
A promising approach toward nonreciprocal magnon phase manipulation is offered by the Aharonov–Casher effect—a mechanism whereby particles or quasiparticles with a magnetic moment acquire an additional phase when traveling through an electric field. While this effect has been theoretically predicted for magnons, direct experimental confirmation is still lacking. Additionally, electric fields also influence magnetic systems through the magnetoelectric effect by modifying the magnetization.
Our experiments demonstrate that the Aharonov–Casher effect and magnetoelectric contributions can be independently quantified and unambiguously distinguished. By applying an in-plane electric field to a perpendicularly magnetized YIG film, we achieve controlled manipulation of the phase of the forward-volume magnetostatic spin waves. The resulting phase shifts depend on both the propagation direction and the polarity of the applied electric field, demonstrating electric-field tunability of magnon transport and offering a pathway toward nonreciprocal phase control in magnonic systems.
Keywords: Aharonov-Casher effect; Magnetoelectric effect; Spin waves; Magnonics