| 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 |
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| 引用本文： | 张磊,李辉武,胡梁宾.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[J].物理学报,2012,61(17):177203-177203. |
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| 作者姓名： | 张磊 李辉武 胡梁宾 |
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| 作者单位： | 华南师范大学物理与电信工程学院量子信息技术实验室,广州,510631 |
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| 基金项目： | 国家自然科学基金(批准号: 10874049)资助的课题. |
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| 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.
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| 关 键 词： | 自旋轨道耦合 持续自旋螺旋态 自旋弛豫 |
| 收稿时间： | 2011-10-18 |
Study of stability of persistent spin helix in two-dimensional electron gases with spin-orbit coupling |
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| Zhang Lei,Li Hui-Wu,Hu Liang-Bin.Study of stability of persistent spin helix in two-dimensional electron gases with spin-orbit coupling[J].Acta Physica Sinica,2012,61(17):177203-177203. |
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| Authors: | Zhang Lei Li Hui-Wu Hu Liang-Bin |
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| Institution: | Laboratory of Quantum Information Technology, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510631, China |
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| 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. |
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| Keywords: | spin-orbit coupling persistent spin helix spin relaxation |
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