Plasmon-induced hot carrier transfer to the surface of three-dimensional topological insulators

doi:10.1103/PhysRevB.98.075428

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	Plasmon-induced hot carrier transfer to the surface of three-dimensional topological insulators
	Paudel, H. P.; Apalkov, V.; Sun, X. J.; Stockman, M. I.
	2018
发表期刊	Physical Review B
ISSN	2469-9950
卷号	98 期号:7 页码:7
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.
关键词	electrical detection spin polarization charge-current transport regime Materials Science Physics
DOI	10.1103/PhysRevB.98.075428
收录类别	SCI
引用统计
文献类型	期刊论文
条目标识符	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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