Field-assisted spin-polarized electron transport through a single quantum well with spin–orbit coupling

doi:10.1088/1674-1056/21/3/037302

中国物理B ›› 2012, Vol. 21 ›› Issue (3): 37302-037302.doi: 10.1088/1674-1056/21/3/037302

丁秀欢¹ ²,张存喜³,王瑞³,周运清³,孔令民³

收稿日期:2011-11-07 修回日期:2011-11-23 出版日期:2012-02-15 发布日期:2012-02-15
通讯作者: 张存喜,cunxizhang@yahoo.com.cn E-mail:cunxizhang@yahoo.com.cn

Field-assisted spin-polarized electron transport through a single quantum well with spin–orbit coupling

Ding Xiu-Huan(丁秀欢)^a)b), Zhang Cun-Xi(张存喜)^c)†, Wang Rui(王瑞)^c) Zhou Yun-Qing(周运清)^c), and Kong Ling-Min(孔令民)^c)

a. Department of Mathematics, Zhejiang Ocean University, Zhoushan 316000, China;
b. Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, Jilin University, Changchun 130012, China;
c. Department of Physics, Zhejiang Ocean University, Zhoushan 316000, China

Received:2011-11-07 Revised:2011-11-23 Online:2012-02-15 Published:2012-02-15
Contact: Zhang Cun-Xi,cunxizhang@yahoo.com.cn E-mail:cunxizhang@yahoo.com.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11147173 and 61106052)he Zhejiang Education Department, China (Grant No. Y201018926 and Y200908466), the Basic Research Foundation of Jilin University, China (Grant No. 93K172011K02), the Basic Research Foundation of Zhejiang Ocean University, the Nature Science Foundation of Zhejiang Province, China (Grant No. 1047172)nd the Open Foundation from Ocean Fishery Science and Technology in the Most Important Subjects of Zhejiang, China(No. 20110105).

摘要/Abstract

Abstract: We have investigated theoretically the field-driven electron transport through a single-quantum-well semiconductor heterostructure with spin-orbit coupling. The splitting of the asymmetric Fano-type resonance peaks due to the Dresselhaus spin-orbit coupling is found to be highly sensitive to the direction of the incident electron. The splitting of the Fano-type resonance induces the spin-polarization dependent electron current. The location and the line shape of the Fano-type resonance can be controlled by adjusting the energy and the direction of the incident electron, the oscillation frequency, and the amplitude of the external field. These interesting features may be used to devise tunable spin filters and realize pure spin transmission currents.

Key words: Fano resonance, Floquet channel, spin-orbit coupling

中图分类号: (Electronic transport in mesoscopic systems)

73.23.-b

72.25.Dc (Spin polarized transport in semiconductors) 73.63.Hs (Quantum wells)

丁秀欢, 张存喜, 王瑞, 周运清, 孔令民. [J]. 中国物理B, 2012, 21(3): 37302-037302.

Ding Xiu-Huan(丁秀欢), Zhang Cun-Xi(张存喜), Wang Rui(王瑞) Zhou Yun-Qing(周运清), and Kong Ling-Min(孔令民) . Field-assisted spin-polarized electron transport through a single quantum well with spin–orbit coupling[J]. Chin. Phys. B, 2012, 21(3): 37302-037302.

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