Spin Wave Propagation In A Ferrimagnetic Thin Film With Perpendicular Magnetic Anisotropy (Vol 117, 232407, 2020)

Iron garnets as an important type of low-damping magnetic insulator can provide an ideal platform for the field of magnonics. In this work, we study the propagation of spin waves in a 60nm-thick TmIG film with perpendicular magnetic anisotropy using all-electrical spin wave spectroscopy. The magnetostatic forward volume mode spin waves show a fully reciprocal propagation. By sweeping out-of-plane magnetic fields in the low-field regime, spin textures are created and observed; meanwhile, the spin wave mode vanishes, which indicates that propagating spin waves are filtered by the spin textures. By applying a large in-plane field, spin wave propagation in a Damon-Eshbach configuration is studied. Our findings provide a potential method to explore reconfigurable magnonic devices.