Goos-Hänchen shift in silicene
| Autor: | Xunong Yi, Meijun Liu, Huan Chen, Li Wen, Honghua Ma, Qianguang Li |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Physics Coupling Condensed matter physics Silicene Phase (waves) General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences lcsh:QC1-999 Physical optics Magnetic field Angular spectrum method Electric field 0103 physical sciences Goos-Hänchen shift 0210 nano-technology lcsh:Physics Circular polarization Phase diagram |
| Zdroj: | Results in Physics, Vol 20, Iss, Pp 103752-(2021) |
| ISSN: | 2211-3797 |
| DOI: | 10.1016/j.rinp.2020.103752 |
| Popis: | Silicene has a rich phase diagram, which is due to the strong spin–orbit coupling induced by the buckled structure. In this work, the Goos-Hanchen (GH) shift of silicene in different phases is investigated. By employing the Kubo model of conductivity of silicene and angular spectrum analysis, the analytical expression of GH shift is obtained. Based on the analytical results, a series of numerical simulations are carried out. The results demonstrate that one can acquire a large negative spatial GH shift at the pseudo-Brewster angle when the silicene is in metal phases. When the silicene is in nonmetallic states, the spatial GH shift become positive. For the angular GH shift, no matter what phase the silicene is in, it varies very rapidly and even changes the sign near the pseudo-Brewster angle. This allow us to manipulate the GH effect by controlling the applied external circularly polarized light electric field or magnetic field. We believe that these results are helpful for developing novel optoelectronic devices that base on the GH effect of silicene. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|