Spin wave propagation in a ferrimagnetic thin film with perpendicular magnetic anisotropy
Lutong Sheng, Yawen Liu, Jilei Chen, Hanchen Wang, Jianyu Zhang, Mingfeng Chen, Ji Ma, Chuan‐Pu Liu, Sa Tu, Ce‐Wen Nan, Haiming Yu
Abstract
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 60 nm-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.