旋转和轨道埃德尔斯坦效应的理论
1Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle (Saale), Germany.
概括
旋转和轨道埃德尔斯坦效应 (SEE和OEE) 在缺乏逆对称的系统中从电荷电流中产生磁化. 本综述涵盖了这些电流诱导效应的理论方法,材料和实验技术.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 这就是Spintronics.
背景情况:
- 在像表面和接口这样的系统中,空间反向对称性被打破可以导致电流诱导的磁化.
- 旋转和轨道埃德尔斯坦效应 (SEE和OEE) 描述了这一现象,产生不平衡的旋转和轨道密度.
- 早期的研究集中在二维Rashba系统上,但这种效应在具有不同磁化方向的多种材料中观察到.
研究的目的:
- 为预测和讨论SEE和OEE提供理论方法的概述.
- 为了突出显示显著的埃德尔斯坦效应的关键材料.
- 要总结用于研究这些效应的常见实验技术.
主要方法:
- 对分析电流诱导的旋转和轨道密度的理论框架的审查.
- 汇编了证明埃德尔斯坦效应的材料的实验发现.
- 已确定的实验方法的概述,用于表征.
主要成果:
- 除了二维Rashba系统之外的各种材料都显示出相当大的Edelstein效应.
- 由此产生的磁化可以在平面内,在平面外,或与应用的电流非对角,这取决于系统对称性.
- 理论和实验的进步扩大了对SEE和OEE的理解.
结论:
- 埃德尔斯坦效应是一种适用于各种具有颠倒对称性破坏的材料系统的多功能现象.
- 了解对称性和电子结构的相互作用对于控制电流诱导的磁化至关重要.
- 在理论建模和实验技术方面进行进一步的研究将有助于推进自旋电子应用.
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