二维自旋轨道耦合电子气中持续自旋螺旋态的稳定性的研究

物理学报

, ,

张磊, 李辉武, 胡梁宾. 2012: 二维自旋轨道耦合电子气中持续自旋螺旋态的稳定性的研究, 物理学报, 61(17): 463-469.

引用本文:

张磊, 李辉武, 胡梁宾. 2012: 二维自旋轨道耦合电子气中持续自旋螺旋态的稳定性的研究, 物理学报, 61(17): 463-469.

2012: Study of stability of persistent spin helix in two-dimensional electron gases with spin-orbit coupling, Acta Physica Sinica, 61(17): 463-469.

Citation:

2012: Study of stability of persistent spin helix in two-dimensional electron gases with spin-orbit coupling, Acta Physica Sinica, 61(17): 463-469.

Study of stability of persistent spin helix in two-dimensional electron gases with spin-orbit coupling

摘要: 本文利用半经典的自旋密度矩阵方法对二维自旋轨道耦合电子气中持续自旋螺旋态的稳定性进行了一些研究，重点研究了自旋螺旋态的寿命与其波矢、载流子迁移率、温度、自旋轨道耦合强度、外电场强度等因素之间的关系，并将部分理论计算结果与最近的一些相关实验结果进行了比较，发现两者之间大致是符合的．
- 自旋轨道耦合 /
- 持续自旋螺旋态 /
- 自旋弛豫
Abstract: We study theoretically the stability of persistent spin helix in two-dimensional electron gases with spin-orbit coupling by a semi-classical spin density matrix method. The possible influences of disordering scattering, temperature, spin-orbit coupling strength and external electric field on the lifetime of persistent spin helix state are investigated. The theoretical results are found to be in agreement with some recent relevant experimental results.