Time-resolved scanning transmission x-ray microscopy studies of spin current induced manipulation of magnetization in nanostructures

纳米结构中自旋电流诱导磁化操纵的时间分辨扫描透射 X 射线显微镜研究

• 批准号: 93755156
• 负责人: Dr. Björn Bräuer
• 金额: --
• 依托单位: Stanford Synchrotron Radiation Lightsource
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/93755156?language=en
• 关键词: Time; resolved; scanning; transmission; ray

The scientific program investigates the ultra-fast manipulation of the magnetization in nanostructures by spin currents. The proposed research explores the spin injection and its temporal evolution into thin films of metallic paramagnets, inorganic and organic semiconductors, and single molecule magnets. The work includes the sample preparation, characterization, and the direct imaging of the time dependent magnetization using a scanning transmission x-ray microscope (STXM) at the Stanford Synchrotron Radiation Laboratory (SSRL). The ultrafast dynamics of spin polarization including its sign will be imaged. For that purpose magnetic excitations which are triggered by picosecond spin current pulses will be used. The understanding of various factors that may influence the spin injection is a prerequisite for the ultimate utilization of this phenomenon in next generation inorganic and organic spintronic technologies.Research field. X-ray microscopy, condensed matter physics, surface sciences, magnetism, inorganic (coordination) chemistry, molecular magnetism.

该科学项目研究了通过自旋电流对纳米结构磁化强度的超快速操纵。拟议的研究探索了金属顺磁体、无机和有机半导体以及单分子磁体薄膜的自旋注入及其时间演化。这项工作包括样品制备、表征以及使用斯坦福同步辐射实验室 (SSRL) 的扫描透射 X 射线显微镜 (STXM) 对时间相关磁化强度进行直接成像。自旋极化的超快动力学及其符号将被成像。为此目的，将使用由皮秒自旋电流脉冲触发的磁激励。了解可能影响自旋注入的各种因素是在下一代无机和有机自旋电子技术中最终利用这种现象的先决条件。研究领域。 X射线显微镜、凝聚态物理、表面科学、磁性、无机（配位）化学、分子磁性。