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Chin. Phys. B, 2008, Vol. 17(8): 3058-3061    DOI: 10.1088/1674-1056/17/8/048
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Spin-dependent quantum transport through an Aharonov--Bohm structure spin splitter

Li Yu-Xian(李玉现)
College of Physics, Hebei Normal University, Shijiazhuang 050016, China
Abstract  Using the tight-binding model approximation, this paper investigates theoretically spin-dependent quantum transport through an Aharonov--Bohm (AB) interferometer. An external magnetic field is applied to produce the spin-polarization and spin current. The AB interferometer, acting as a spin splitter, separates the opposite spin polarization current. By adjusting the energy and the direction of the magnetic field, large spin-polarized current can be obtained.
Keywords:  Aharonov--Bohm interferometer      magnetic field      spin splitter  
Received:  19 January 2008      Revised:  28 January 2008      Accepted manuscript online: 
PACS:  72.25.Mk (Spin transport through interfaces)  
  73.63.Kv (Quantum dots)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10674040) and the Natural Science Foundation of Hebei Province, China (Grant No A2007000227).

Cite this article: 

Li Yu-Xian(李玉现) Spin-dependent quantum transport through an Aharonov--Bohm structure spin splitter 2008 Chin. Phys. B 17 3058

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