| Helicity-dependent terahertz emission spectroscopy of topological insulator Sb2Te3 thin films | |
|---|---|
| 學年 | 106 |
| 學期 | 1 |
| 出版（發表）日期 | 2017-11-06 |
| 作品名稱 | Helicity-dependent terahertz emission spectroscopy of topological insulator Sb2Te3 thin films |
| 作品名稱（其他語言） | |
| 著者 | Tu, C.-M.; Chen, Y.-C.; Huang, P.; Chuang, P.-Y.; Lin, M.-Y.; Cheng, C.-M.; Lin, J.-Y.; Juang, J.-Y.; Wu, K.-H.; Huang, J.-C.A.; Pong, W.-F.; Kobayashi, T.; Luo, C.-W. |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Physical Review B-Condensed Matter 96(19), p.195407 |
| 摘要 | We report on helicity-dependent terahertz emissions that originate from the helicity-dependent photocurrents in topological insulator S b 2 T e 3 thin films due to ultrafast optical excitation. The polarity of the emitted terahertz radiation is controlled by both the incident angle and the helicity of optical pulses. Using an unprecedented decomposition-recombination procedure in the time domain, the signals of the Dirac fermions are fully separated from bulk contributions. These results provide insights into the optical coupling of topological surface states and open up opportunities for applying helicity-dependent terahertz emission spectroscopy in spintronics. |
| 關鍵字 | |
| 語言 | en_US |
| ISSN | |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/115551 ) |
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