A collaborative group of researchers led by TI-FRIS Fellow Taichi Goto, associate professor at Tohoku University's Electrical Communication Research Institute (RIEC) has potentially developed a means of controlling spin waves by creating a hexagonal pattern of copper disks on a magnetic insulator (shown in Figure). The breakthrough is expected to lead to greater efficiency and miniaturization of communication devices in fields such as artificial intelligence and automation technology.

Figure: An illustration of the two-dimensional magnonic crystal developed in this study, viewed from an oblique angle. Copper disks are periodically arranged on a magnetic garnet film. ©Taichi Goto et al.

Details of the study were published in the journal Physical Review Applied on January 30, 2024.

Publication Details:

Title: Orientation-dependent two-dimensional magnonic crystal modes in an ultralow-damping ferrimagnetic waveguide containing repositioned hexagonal lattices of Cu disks

Authors: Kanta Mori, Takumi Koguchi, Toshiaki Watanabe, Yuki Yoshihara, Hibiki Miyashita, Dirk Grundler, Mitsuteru Inoue, Kazushi Ishiyama, Taichi Goto

Journal: Physical Review Applied

DOI: 10.1103/PhysRevApplied.21.014061

https://doi.org/10.1103/PhysRevApplied.21.014061