Electron resonance-transmission through a driven quantum well with spin--orbit coupling |
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| Authors: | Zhang Cun-Xi Wang Rui Nie Yi-Hang and Liang Jiu-Qing |
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| Institution: | Department of Physics and Institute of
Theoretical Physics, Shanxi
University, Taiyuan 030006, China; Department of Physics and Institute of
Theoretical Physics, Shanxi
University, Taiyuan 030006, China;Department of Physics, Yanbei Normal Institute, Datong
037000, China; Physical Department of Zhejiang Ocean University, Zhoushan 316000, China |
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| 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. |
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| Keywords: | Fano resonance Floquet channel spin--orbit coupling |
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