Observation of accumulated spins through magneto-optical effect in reciprocal space

通过倒易空间中的磁光效应观察累积自旋

• 批准号: 23654113
• 负责人: YANAGIHARA Hideto
• 金额: $ 2.33万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23654113/
• 关键词: スピンホール効果; 磁気光学効果; スピン蓄積; スピンホール; 回折

In this study, we attempted to detect spin accumulation signal at the edges of platinum gratings with electric current through magneto-optical effect(MOKE) .An optical diffractometer equipped with a MOKE detector based upon a polarization modulation technique was built. A blue laser diode is chosen as a light source and the gratings were designed by taking account of the wavelength.A double modulation technique of the ac current and polarization modulation was adopted. The distinct of spin accumulation signal has not been observed yet, suggesting that other improvements are needed to reduce the background noise and to enhance the spin accumulation signal.

在本研究中，我们尝试通过磁光效应（MOKE）电流检测铂光栅边缘的自旋累积信号。构建了一种配备基于偏振调制技术的MOKE探测器的光学衍射仪。选择蓝色激光二极管作为光源，考虑波长设计光栅。采用交流电流和偏振调制的双调制技术。尚未观察到自旋累积信号的明显特征，这表明需要其他改进来降低背景噪声并增强自旋累积信号。