Materials World Network: Scanned Probe Studies of FMR Driven Spin Injection in Individual Fe-filled Carbon Nanotubes

材料世界网络：单个铁填充碳纳米管中 FMR 驱动的自旋注入的扫描探针研究

• 批准号: 73356975
• 负责人: Dr. Thomas Mühl
• 金额: --
• 依托单位: Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (IFW) e.V.
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/73356975?language=en
• 关键词: Materials; World; Network; Scanned; Probe

Here we propose an international collaborative research program to investigate spin pumping and spin transport in multicomponent nanowires. Our experimental approach is based on magnetic resonance force microscopy (MRFM), a novel imaging technique which has the unique ability to image spin structures in three dimensions with high resolution.Our materials of choice are filled multiwall carbon nanotubes (MWCNTs). Fe-MWCNTs are crystalline, quasi one-dimensional ferromagnetic nanowires encased in protective carbon nanotube shells. Techniques for fabricating and manipulating these nanotube systems are well developed. Nanotube manipulation procedures include tailoring by local oxidation, opening, further filling, local bending, attaching to predefined sample locations, and preparing electrically connected nanotube systems.We propose global and local ferromagnetic resonance (FMR) experiments on individual Fe-MWCNTs including measurements of the damping due to pumping of spin from resonant into non-resonant regions.We intend to synthesize multicomponent filled carbon nanotubes containing ferromagnetic and normal conductor fillings in the course of the proposed research. These hybrid systems will be used in order to pump spin into adjacent nanotube sections and to image electrically detected spin pumping.

在这里，我们提出了一个国际合作研究计划，调查自旋泵和自旋输运多组分纳米线。我们的实验方法是基于磁共振力显微镜（MRFM），一种新的成像技术，具有独特的能力，在三维高分辨率的自旋结构。我们选择的材料是填充多壁碳纳米管（MWCNTs）。Fe-MWCNTs是包裹在保护性碳纳米管壳中的晶体、准一维铁磁纳米线。用于制造和操纵这些纳米管系统的技术得到了很好的发展。纳米管操作程序包括通过局部氧化、打开、进一步填充、局部弯曲、附着到预定义的样品位置进行剪裁，和制备电连接的纳米管系统。我们提出了整体和局部的铁磁共振（FMR）实验对个别的Fe-MWCNTs，包括测量的阻尼，由于泵的自旋从共振到非共振。我们打算在所提出的研究过程中合成含有铁磁和正常导体填充物的多组分填充碳纳米管。这些混合系统将被用于将自旋泵入相邻的纳米管部分，并对电检测的自旋泵进行成像。