Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1554506 | Superlattices and Microstructures | 2009 | 9 Pages |
Abstract
The spin-flip transport of electron in one-dimensional comb-like waveguide structures is investigated theoretically including the Rashba and Dresselhaus effects. The spin-polarized transmission of electron oscillates with changing the length of stubs and/or electronic momentum, and depends sensitively on electron spin orientation injected from the ferromagnetic source. The spin-flip transmission induced by the Rashba and Dresselhaus effects can only be up to 25% in the case of one stub, and can be enhanced significantly by adding more stubs. The spin-flip transmission induced by the Dresselhaus effect is similar to what induced by the Rashba effect for the one stub case, but is quite different for multi-stub case. The interplay between the Rashba and Dresselhaus effects shortens the period of transmission oscillation and enhances the splitting of the transmission peaks.
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Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Li-guo Wang, You-li Huang,