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Chin. Phys. B, 2018, Vol. 27(3): 037201    DOI: 10.1088/1674-1056/27/3/037201

Spin flip in single quantum ring with Rashba spin-orbit interation

Duan-Yang Liu(刘端阳)1, Jian-Bai Xia(夏建白)2
1 College of Science, Beijing University of Chemical Technology, Beijing 100029, China;
2 State Key Laboratory for Superlattice and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
Abstract  We theoretically investigate spin transport in the elliptical ring and the circular ring with Rashba spin-orbit interaction. It is shown that when Rashba spin-orbit interaction is relatively weak, a single circular ring can not realize spin flip, however an elliptical ring may work as a spin-inverter at this time, and the influence of the defect of the geometry is not obvious. Howerver if a giant Rashba spin-orbit interaction strength has been obtained, a circular ring can work as a spin-inverter with a high stability.
Keywords:  Rashba spin-orbit interaction      quantum waveguide      Aharonov-Bohm ring      spin flip spin device  
Received:  14 November 2017      Revised:  26 December 2017      Accepted manuscript online: 
PACS:  72.25.Dc (Spin polarized transport in semiconductors)  
  73.22.Dj (Single particle states)  
  73.23.-b (Electronic transport in mesoscopic systems)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11504016).
Corresponding Authors:  Duan-Yang Liu     E-mail:

Cite this article: 

Duan-Yang Liu(刘端阳), Jian-Bai Xia(夏建白) Spin flip in single quantum ring with Rashba spin-orbit interation 2018 Chin. Phys. B 27 037201

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