Valley and spin dependent group delay time in silicene superlattice

2020 ◽  
Vol 597 ◽  
pp. 412354
Author(s):  
Farhad Sattari
Author(s):  
Sang-keun Park ◽  
Jae-hun Yun ◽  
Yong-chae Jeong ◽  
Chul-dong Kim

2021 ◽  
Vol 36 (6) ◽  
pp. 676-683
Author(s):  
Daobin Wang ◽  
Jiahuan Yang ◽  
Wei Wang ◽  
Lihua Yuan ◽  
Xiaoxiao Li

The bulk Dirac semimetal (BDS) is an interesting material, similar to graphene, which can dynamically adjust its optical properties via a variation in its Fermi energy or electrical voltage. In this work, a BDS-based plasmonic device, which enables tunable terahertz plasmon-induced transparency, was proposed and designed. By using the finite element method, the surface plasmon polariton and plasmon-induced transparency of this device were systematically investigated. The results demonstrate that the plasmon-induced transparency of such device can be dynamically tuned by varying its Fermi energy. When the Fermi energy changes from 55 meV to 95 meV, the maximum group delay time of the device increases from 13.2 ps to 21 ps. In the case of a cascading device, the maximum group delay time can be further pushed up to 44.57 ps. The influence of the ambient refractive index on the optical properties of the proposed device was also considered and investigated.


2012 ◽  
Vol 24 (1) ◽  
pp. 152-156
Author(s):  
谢兴娟 Xie Xingjuan ◽  
丁耀根 Ding Yaogen ◽  
刘濮鲲 Liu Pukun ◽  
黄传禄 Huang Chuanlu ◽  
董玉和 Dong Yuhe

Author(s):  
Heungjae Choi ◽  
Kyungju Song ◽  
Chul Dong Kim ◽  
Yongchae Jeong

2019 ◽  
Vol 32 (3) ◽  
pp. 035301 ◽  
Author(s):  
Zhonghui Xu ◽  
Zhuo Bin Siu ◽  
Yan Chen ◽  
Jinsong Huang ◽  
Yanling Li ◽  
...  

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