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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 |
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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.
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Received: 07 November 2011
Revised: 23 November 2011
Accepted manuscript online:
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PACS:
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73.23.-b
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(Electronic transport in mesoscopic systems)
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72.25.Dc
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(Spin polarized transport in semiconductors)
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73.63.Hs
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(Quantum wells)
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| Fund: 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). |
Corresponding Authors:
Zhang Cun-Xi,cunxizhang@yahoo.com.cn
E-mail: cunxizhang@yahoo.com.cn
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Cite this article:
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 2012 Chin. Phys. B 21 037302
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