Spin-orbit interaction in coupled quantum wells |
| |
Authors: | Hao Ya-Fei |
| |
Institution: | Hao Ya-Fei Physics Department, Zhejiang Normal University, Zhejiang 321004, China |
| |
Abstract: | We theoretically investigate the spin-orbit interaction in GaAs/AlxGa1-xAs coupled quantum wells. We consider the contribution of the interface-related Rashba term as well as the linear and cubic Dresselhaus terms to the spin splitting. For the coupled quantum wells which bear an inherent structure inversion asymmetry, the same probability density distribution of electron in the two step quantum wells results in a large spin splitting from the interface term. If the widths of the two step quantum wells are different, the electron probability density in the wider step quantum well is considerably higher than that in the narrower one, resulting in the decrease of the spin splitting from the interface term. The results also show that the spin splitting of the coupled quantum well is not significantly larger than that of a step quantum well. |
| |
Keywords: | spin-orbit interaction coupled quantum wells spin splitting |
本文献已被 CNKI 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|