中国物理B ›› 2008, Vol. 17 ›› Issue (7): 2662-2669.doi: 10.1088/1674-1056/17/7/051

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Electron resonance-transmission through a driven quantum well with spin--orbit coupling

张存喜1, 梁九卿1, 聂一行2, 王瑞3   

  1. (1)Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China; (2)Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China;Department of Physics, Yanbei Normal Institute, Datong 037000, China; (3)Physical Department of Zhejiang Ocean University, Zhoushan 316000, China
  • 收稿日期:2007-12-26 修回日期:2008-01-09 出版日期:2008-07-09 发布日期:2008-07-09
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10475053, 10775091 and 10774094) and the Shanxi Natural Science Foundation of China (Grant No 20051002).

Electron resonance-transmission through a driven quantum well with spin--orbit coupling

Zhang Cun-Xi(张存喜)a), Wang Rui(王瑞)b), Nie Yi-Hang(聂一行)a)c)†, and Liang Jiu-Qing(梁九卿)a)   

  1. a Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China; b Physical Department of Zhejiang Ocean University, Zhoushan 316000, China; c Department of Physics, Yanbei Normal Institute, Datong 037000, China
  • Received:2007-12-26 Revised:2008-01-09 Online:2008-07-09 Published:2008-07-09
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10475053, 10775091 and 10774094) and the Shanxi Natural Science Foundation of China (Grant No 20051002).

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摘要： We have studied the spin-dependent electron transmission through a quantum well driven by both dipole-type and homogeneous oscillating fields. The numerical evaluations show that Dresselhaus spin--orbit coupling induces the splitting of asymmetric Fano-type resonance peaks in the conductivity, in which the dipole modulation and the homogeneous modulation are\ equivalent. Therefore, we predict that the dipole-type oscillation, which is more practical in the experimental setup, can be used to realize the tunable spin filters by adjusting the field oscillation-frequency and the amplitude as well.

关键词: Fano resonance, Floquet channel, spin--orbit coupling

Abstract: We have studied the spin-dependent electron transmission through a quantum well driven by both dipole-type and homogeneous oscillating fields. The numerical evaluations show that Dresselhaus spin--orbit coupling induces the splitting of asymmetric Fano-type resonance peaks in the conductivity, in which the dipole modulation and the homogeneous modulation are equivalent. Therefore, we predict that the dipole-type oscillation, which is more practical in the experimental setup, can be used to realize the tunable spin filters by adjusting the field oscillation-frequency and the amplitude as well.

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

中图分类号:  (Quantum wells)

  • 73.21.Fg
71.70.Ej (Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect) 72.10.-d (Theory of electronic transport; scattering mechanisms) 72.25.Dc (Spin polarized transport in semiconductors) 72.25.Mk (Spin transport through interfaces) 73.40.Kp (III-V semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)