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Spin-dependent Breit–Wigner and Fano resonances in photon-assisted electron transport through a semiconductor heterostructure |
| Hu Li-Yun(胡丽云) and Zhou Bin(周斌)† |
| Department of Physics, Hubei University, Wuhan 430062, China |
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Abstract We theoretically investigate the electron transmission through a seven-layer semiconductor heterostructure with the Dresselhaus spin-orbit coupling under two applied oscillating fields. Numerical results show that both of the spin-dependent symmetric Breit-Wigner and the asymmetric Fano resonances appear and that the properties of these two types of resonance peaks are dependent on the amplitude and the relative phases of the two applied oscillating fields. The modulation of the spin-polarization efficiency of transmitted electrons by the relative phase is also discussed.
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Received: 10 August 2010
Revised: 25 February 2011
Accepted manuscript online:
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PACS:
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72.25.Dc
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(Spin polarized transport in semiconductors)
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71.70.Ej
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(Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)
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85.75.Mm
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(Spin polarized resonant tunnel junctions)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10974046), Natural Science Foundation of Hubei Province of China (Grant No. 2009CDB360), and the Key Project of Education Department of Hubei Province of China (Grant No. D20101004). |
Cite this article:
Hu Li-Yun(胡丽云) and Zhou Bin(周斌) Spin-dependent Breit–Wigner and Fano resonances in photon-assisted electron transport through a semiconductor heterostructure 2011 Chin. Phys. B 20 067201
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