| 自旋轨道耦合系统中的电流导致的自旋极化 |
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| 引用本文： | 赵琳,庞茂源,王春明.自旋轨道耦合系统中的电流导致的自旋极化[J].山东大学学报(理学版),2009,44(11):35-39. |
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| 作者姓名： | 赵琳 庞茂源 王春明 |
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| 作者单位： | 1. 临沂师范学院物理系, 山东 临沂 276005; 2. 临沂市兰山区枣沟头镇中学, 山东 临沂 276038;3. 安阳师范学院物理系, 河南 安阳 455000 |
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| 摘 要： | 研究了二维Rashba自旋轨道耦合电子系统中的电流导致的自旋极化。对于δ函数形式的短程电子杂质散射,得出了和文献一致的结果。在远处杂质散射下,自旋极化将会强烈地依赖于电子密度,这个结果完全不同于短程势散射的情况。并且随着杂质距离的变大,自旋极化增强。在这种散射势的情况下,不再能够通过测量纵向电导和磁化强度的方法来确定样品的 Rashba 自旋轨道耦合系数。
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| 关 键 词： | 自旋轨道耦合 自旋极化 长程电子杂质散射 |
| 收稿时间： | 2009-03-03 |
Current-induced spin polarization in spin-orbit coupling systems |
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| ZHAO Lin,PANG Mao-yuan,WANG Chun-ming.Current-induced spin polarization in spin-orbit coupling systems[J].Journal of Shandong University,2009,44(11):35-39. |
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| Authors: | ZHAO Lin PANG Mao-yuan WANG Chun-ming |
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| Institution: | 1. Department of Physics, Linyi Normal University, Linyi 276005, Shandong, China; 2. Zaogoutou Middle School of Lanshan District Linyi City, Linyi 276038, Shandong, China; 3. Department of Physics, Anyang Normal University, Anyang 455000, Henan， China |
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| Abstract: | The current-induced spin polarization in a two-dimensional electron system with Rashba spin-orbit coupling is investi-gated.For δ-form electron-impurity scattering,the spin polarization is consistent with the literature.In the case of remote elec-tron-impurity collision,the spin polarization is found to be dependent on the electron density and increases with enlargement of the impurity distance,which is in contrast to the case for short-range potential.And the Rashba spin-orbit coupling constant can not be determined by measuring the longitudinal conductivity and magnetization in this situation. |
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| Keywords: | spin-orbit coupling spin polarization long-range electron-impurity scattering |
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