半金属
太赫兹辐射
Dirac(视频压缩格式)
物理
极化(电化学)
凝聚态物理
谐振器
费米能级
对称(几何)
相(物质)
量子力学
光学
化学
几何学
数学
物理化学
带隙
中微子
电子
作者
Weikui Yang,Zhenkai Li,Meng Liu,Yuping Zhang,huiyun zhang
标识
DOI:10.35848/1882-0786/acaebf
摘要
Abstract In this study, we designed a tunable metasurface using bulk Dirac semimetal, whose periodic unit consisted of two orthogonally oriented split rings with identical dimensions in resonator mode, to observe and study exceptional points (EPs). By changing the Fermi level of the Dirac semimetal, the PT symmetry phase transitioned to the PT symmetry-breaking phase, which enabled the observation of an EP. The proposed method exploits the sensitivity of EPs to the perturbations in the system. The results calculated using the coupled mode theory were consistent with the results of simulations and have significant implications in polarization detection, manipulation, and ultrasensitive sensing.
科研通智能强力驱动
Strongly Powered by AbleSci AI