Local magnetic spectroscopy of individual organometallic molecules with spin-polarized scanning tunneling microscopy

使用自旋偏振扫描隧道显微镜对单个有机金属分子进行局部磁谱分析

• 批准号: 5441109
• 负责人: Professor Dr. Germar Hoffmann
• 金额: --
• 依托单位: Institut für Nanostruktur- und Festkörperphysik (INF)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2004
• 资助国家: 德国
• 起止时间: 2003-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5441109?language=en
• 关键词: Local; magnetic; spectroscopy; individual; organometallic

In this project our primary goal is to establish spin polarized scanning tunnelling microscopy as a tool for local magnetic characterization of molecular systems. STM is used to address individual atoms and single molecules at an atomic scale. SP-STM, developed in this group, can address also the spin states with atomic precision. We intend to develop SP-STM further and to apply it for the fist time to magnetic molecular systems as a cross link between chemistry and surface science physics. In cooperation with the group of Prof. M. Bröring we will study simple paramagnetic molecules based on porphyrinoids. Porphyrinoids are ideally suited to apply the technique of local magnetic spectroscopy with SP-STM. Macrocyclic porphyrinoids like phthalocyanines or corroles are simple and flat molecules with a metallic center as spin donator. This is desired for first experiments to have large magnetic signals since we directly address the electronic shells. For future experiments we will also have access to more complex systems in cooperation with the groups of Prof. Saalfrank and Prof. Gatteschi.

在这个项目中，我们的主要目标是建立自旋极化扫描隧道显微镜作为一种工具，局部磁性表征的分子系统。STM用于在原子尺度上处理单个原子和单个分子。在这个小组中开发的SP-STM也可以以原子精度寻址自旋状态。我们打算进一步发展SP-STM，并首次将其应用于磁性分子系统，作为化学和表面科学物理之间的交叉纽带。与M.接下来，我们将研究基于卟啉类化合物的简单顺磁性分子。卟啉类化合物非常适合应用SP-STM局部磁谱技术。大环卟啉类化合物，如酞菁或可咯啉，是一种以金属中心为自旋给体的简单扁平分子。这是第一次实验所需要的，因为我们直接寻址电子壳层。在未来的实验中，我们还将与Saalfrank教授和Gatteschi教授的团队合作，使用更复杂的系统。