Spin-Orbit Splitting in Semiconductor Quantum Dots with a Two-Dimensional Ring Model  

作　　者：冯俊生 刘征 

机构地区：[1]Department of Physics, Hefei Teachers College, Hefei 230031 [2]State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050

出　　处：《Chinese Physics Letters》2009年第8期24-27,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10704080 and 60877067, the National Basic Research Program of China under Grant No 2006CB921701-6 and the Program of STCSM under Grant No 08dj1400303.

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 a/so 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.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 a/so 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.

关 键 词：sea surface nonliear interaction numerical method 

分 类 号：O614.811[理学—无机化学] TN304.26[理学—化学]