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Conductance of Rashba electron in a quantum waveguide with smooth boundary |
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| Authors: | Duan-Yang Liu Yi-Zhu Lin Jian-Bai Xia |
| Affiliation: | 1. College of Science, Beijing University of Chemical Technology, Beijing 100029, China;2. School of Electronic Information Engineering, China West Normal University, #1 Shi Da Rd., Nanchong, Sichuan 637002, China;3. State Key Laboratory for Superlattice and Microstructures, Institute of Semiconductors, Beijing 100083, China |
| Abstract: | By using the transfer matrix method, we theoretically investigated Rashba electron's spin transport in a straight waveguide with a stub which has a smooth boundary. It is proved that the two spin states propagate independently. The conductance of the waveguide has been calculated. Conductance quantization is common in this structure when we change the Fermi energy and the width of the stub. If the shape of the stub converges toward the limit–a quadrate stub, the conductance will reduce distinctly due to reflection. |
| Keywords: | Rashba spin–orbit interaction Quantum waveguide Conductance quantization Datta–Das spin field-effect transistor Two-dimensional Spin transport |
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