[16p-D61-1~13] 10.2 Fundamental and exploratory device technologies for spin

2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)

[16p-D61-5] Two-Dimensional Magnonic Crystals Exhibiting Complete Band Gaps Using Yttrium Iron Garnets

〇Taichi Goto¹, Kanta Mori¹, Toshiaki Watanabe², Takumi Koguchi¹, Hikibi Miyashita¹, Mitsuteru Inoue¹, Kazushi Ishiyama¹ (1.RIEC, Tohoku Univ., 2.Shin-Etsu Chem.)

Keywords:

spin wave,magnonic crystal,yttrium iron garnet

The realization of spin wave devices requires the ability to control spin wave propagation, which conventional two-dimensional magnonic crystals have failed to achieve due to the lack of complete bandgaps. We investigated a structure consisting of a gold film with a hexagonal lattice of holes on an yttrium iron garnet (YIG) film, and computationally demonstrated the emergence of a complete bandgap. By optimizing the hole diameter and slit width, a complete bandgap that blocks spin waves at any incident angle can be obtained, paving the way for the realization of spin wave waveguides.