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Understanding and controlling nanoscale spin coupling in molecular spintronic materials

了解和控制分子自旋电子材料中的纳米级自旋耦合

基本信息

批准号：
126708736
负责人：
Professor Dr. Daniel Wegner
金额：
--
依托单位：
Institute for Molecules and Materials
依托单位国家：
德国
项目类别：
Independent Junior Research Groups
财政年份：
2009
资助国家：
德国
起止时间：
2008-12-31 至 2015-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/126708736?language=en
关键词：
Understanding controlling nanoscale spin coupling

项目摘要

Spintronics at the molecular scale is a strongly growing discipline due to intriguing fundamental phenomena as well as high potential for technological applications. This area aims at controlling spin degrees of freedom in nanoscale devices to attain useful new functionality. For this purpose, a more fundamental understanding of the local properties and interactions of molecular spin centers embedded in a solid-state environment is necessary, requiring new studies with high spatial and energy resolution.In this proposed research, new bottom-up designed molecular spin structures and single molecule magnets will be characterized and manipulated in an atomic-scale controlled environment by using scanning tunneling microscopy (STM) and spectroscopy (STS), as well as spin-polarized STM and single-molecule transport at cryogenic temperatures. The main goal is to gain fundamental knowledge of the interplay between structural, electronic, and magnetic properties of the surface-supported molecular magnets and molecule-based spin structures. Based upon this new understanding, prototype molecular spintronic devices will be realized that utilize the spin degree of freedom through tailored orbital coupling on gate-tunable graphene devices or by harnessing the spin-torque effect in single molecule transport experiments.

分子尺度的自旋电子学由于其有趣的基本现象和巨大的技术应用潜力而成为一门蓬勃发展的学科。该领域旨在控制纳米级器件的自旋自由度，以获得有用的新功能。为此，有必要对嵌入在固态环境中的分子自旋中心的局部性质和相互作用有更基本的了解，这需要具有高空间和能量分辨率的新研究。在本研究中，新的自下而上设计的分子自旋结构和单分子磁体将通过扫描隧道显微镜（STM）和光谱学（STS），以及自旋极化STM和低温下的单分子输运，在原子尺度的受控环境中进行表征和操作。主要目标是获得关于表面支撑分子磁体和分子基自旋结构的结构、电子和磁性之间相互作用的基本知识。基于这一新的认识，原型分子自旋电子器件将通过在栅极可调石墨烯器件上定制轨道耦合或在单分子输运实验中利用自旋自由度来实现。