Plasmon-induced hot carrier transfer to the surface of three-dimensional topological insulators
文献类型：期刊论文
| 作者 | Paudel, H. P.; Apalkov, V.; Sun, X. J.; Stockman, M. I. |
| 刊名 | Physical Review B
 |
| 出版日期 | 2018 |
| 卷号 | 98期号:7页码:7 |
| 关键词 | electrical detection spin polarization charge-current transport regime Materials Science Physics |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.98.075428 |
| 英文摘要 | We consider theoretically a conical Ag tip coupled to surface states of a three-dimensional topological insulator (3D TI) such asBi(2)Se(3). Generation of propagating surface plasmon polaritons (SPPs) in a metal cone by a laser field produces an intense optical field near the tip of the cone and high concentration of hot carriers in the metal near the surface of the topological insulator. Such hot carriers are transferred through a Schottky contact between tip and TI to the chiral spin surface states of TI, resulting in finite spin polarization and spin current at the surface of TI. SPPs in the metal cone are excited with a THz laser with energy in the optical band gap of 3D TI to avoid photoexcitations in the bulk of Bi2Se3. We also propose a detail scheme for experimental measurements of such currents. Our results can find applications in spintronics. |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/60768]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | Paudel, H. P.,Apalkov, V.,Sun, X. J.,et al. Plasmon-induced hot carrier transfer to the surface of three-dimensional topological insulators[J]. Physical Review B,2018,98(7):7. |
| APA | Paudel, H. P.,Apalkov, V.,Sun, X. J.,&Stockman, M. I..(2018).Plasmon-induced hot carrier transfer to the surface of three-dimensional topological insulators.Physical Review B,98(7),7. |
| MLA | Paudel, H. P.,et al."Plasmon-induced hot carrier transfer to the surface of three-dimensional topological insulators".Physical Review B 98.7(2018):7. |
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