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Spin-Orbit Splitting in Semiconductor Quantum Dots with a Two-Dimensional Ring Model |
| FENG Jun-Sheng1, LIU Zheng2 |
| 1Department of Physics, Hefei Teachers College, Hefei 2300312State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050 |
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| Cite this article: |
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FENG Jun-Sheng, LIU Zheng 2009 Chin. Phys. Lett. 26 080305 |
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Abstract We present a theoretical study of the energy levels with two-dimensional ring confining potential in the presence of the Rashba spin-orbit interaction. The features of some low-lying states in various strengths of the Rashba spin-orbit interaction are investigated. The Rashba spin-orbit splitting can also be influenced by the width of the potential barrier. The computed results show that the spin-polarized electronic states can be more easily achieved in a weakly confined dot when the confinement strength for the Rashba spin-orbit interaction is larger than a critical value.
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| Keywords:
03.65.Ge
71.70.Ej
73.21.La
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Received: 17 May 2009
Published: 30 July 2009
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| PACS: |
03.65.Ge
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(Solutions of wave equations: bound states)
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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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73.21.La
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(Quantum dots)
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