[14p-K305-1~14] 3.1 Basic optics and frontier of optics

3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)

[14p-K305-6] Anomalous X-ray transmission occurring at interface of crystal stacking faults

〇yoshiki kohmura¹, kei sawada¹, hidekazu takano¹, tetsuya ishikawa¹ (1.RIKEN)

Keywords:

stacking fault defect,anomalous transmission,band topology

As an example of "band topology" focusing on edges in a periodic medium, microwaves were irradiated onto a multilayer film sample containing non-periodic layers, and a transmittance of approximately 100% was measured in the reflected frequency band. We were the first in the world to observe the phenomenon of anomalous X-ray transmission, which shows a transmittance of approximately 200% near the interface of stacking faults in a crystal where the periodicity is broken, and showed that the high transmittance is the result of X-rays being concentrated by the "X-ray translation effect" in the direction from the crystal region away from the stacking fault toward the interface.