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
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
摘要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.
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.
FENG Jun-Sheng;LIU Zheng. Spin-Orbit Splitting in Semiconductor Quantum Dots with a Two-Dimensional Ring Model[J]. 中国物理快报, 2009, 26(8): 80305-080305.
FENG Jun-Sheng, LIU Zheng. Spin-Orbit Splitting in Semiconductor Quantum Dots with a Two-Dimensional Ring Model. Chin. Phys. Lett., 2009, 26(8): 80305-080305.
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2009, Vol. 26 
