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

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 dir...

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Bibliographic Details
Published in:Chinese physics B 2012-03, Vol.21 (3), p.389-394, Article 037302
Main Authors: Ding, Xiu-Huan, Zhang, Cun-Xi, Wang, Rui, Zhou, Yun-Qing, Kong, Ling-Min
Format: Article
Language:English
Subjects:
Amplitudes
Asymmetry
Electron transport
Fano共振
Line shape
Oscillations
Quantum wells
Semiconductors
Spin-orbit interactions
Splitting
单量子阱
旋转过滤器
极化电流
电子传输
自旋极化
自旋轨道耦合
量子自旋
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Summary: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.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/3/037302