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Chinese Physics, 2005, Vol. 14(1): 196-200    DOI: 10.1088/1009-1963/14/1/036
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Spin-polarized transport through a double Aharonov-Bohm ring in the presence of magnetic impurity

Gao Ying-Fang (高迎芳), Zhang Yong-Ping (张永平), Liang Jiu-Qing (梁九卿)
Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China
Abstract  The Aharonov--Bohm (AB) interference oscillations manifested through transmission of an electron in a mesoscopic device with a double-ring in the presence of a magnetic impurity serving as the spin-flipper are studied.The spin-flipper is demonstrated to indeed cause the partial decoherence of the AB interference. Moreover, it is found that the spin-up/down transmission coefficients are asymmetric in the flux reversal while the reflection coefficients as well as that the total transmission coefficient are symmetric.
Keywords:  spin-polarized transport      Aharonov--Bohm ring      magnetic impurity atom  
Received:  22 July 2004      Revised:  25 August 2004      Accepted manuscript online: 
PACS:  7290  
  7210  
  0560  
  0365  

Cite this article: 

Gao Ying-Fang (高迎芳), Zhang Yong-Ping (张永平), Liang Jiu-Qing (梁九卿) Spin-polarized transport through a double Aharonov-Bohm ring in the presence of magnetic impurity 2005 Chinese Physics 14 196

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