[15a-WL2_201-1~9] 3.10 Photonic structures and phenomena

11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)

[15a-WL2_201-9] Theoretical Study of Interface-Localized States in Chiral Gyroid Junctions

〇Katsuhiro Takahashi¹, Huyen Thanh Phan¹, Shoya Yoshida¹, Katsunori Wakabayashi¹ (1.Kwansei Gakuin Univ.)

Keywords:

Photonic crystal,interface states,geometric phase

We theoretically analyze electromagnetic field states in photonic crystals formed by junctions between gyroid structures with opposite chirality. Band structure calculations show the emergence of interface-localized states within the photonic band gap. Furthermore, we numerically evaluate the Wilson loop for Bloch eigenstates belonging to the bulk photonic bands and discuss the origin of the interface states from the viewpoint of geometric phase.