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)
a Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China; bPhysical Department of Zhejiang Ocean University, Zhoushan 316000, China; cDepartment of Physics, Yanbei Normal Institute, Datong 037000, China
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.
Received: 26 December 2007
Revised: 09 January 2008
Accepted manuscript online:
(III-V semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)
Fund: 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).
Cite this article:
Zhang Cun-Xi(张存喜), Wang Rui(王瑞), Nie Yi-Hang(聂一行), and Liang Jiu-Qing(梁九卿) Electron resonance-transmission through a driven quantum well with spin--orbit coupling 2008 Chin. Phys. B 17 2662
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