2015年5月
Spin-dependent refraction at the atomic step of transition-metal dichalcogenides
PHYSICAL REVIEW B
- ,
- 巻
- 91
- 号
- 20
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.91.201407
- 出版者・発行元
- AMER PHYSICAL SOC
We theoretically propose a spin-dependent electronic transport mechanism in which the spin-unpolarized electron beam is split into different directions depending on spins at an atomic domain boundary in nonmagnetic material. Specifically, we calculate the electronic transmission across a boundary between the monolayer and bilayer of the transition-metal dichalcogenide, and demonstrate that up-spin and down-spin electrons entering the boundary are refracted and collimated to opposite directions. The phenomenon is attributed to the strong spin-orbit interaction, the trigonally warped Fermi surface, and the different crystal symmetries between the monolayer and bilayer systems. The spin-dependent refraction suggests a potential application for a spin splitter, which spatially separates up-spin and down-spin electrons simply by passing the electric current through the boundary.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevB.91.201407
- ISSN : 2469-9950
- eISSN : 2469-9969
- Web of Science ID : WOS:000354972700002