Atomic-scale spin-engineering and dynamics of novel nano-magnets

新型纳米磁体的原子尺度自旋工程和动力学

• 批准号: 225912579
• 负责人: Professor Dr. Alexander Ako Khajetoorians
• 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: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/225912579?language=en
• 关键词: Atomic; scale; spin; engineering; dynamics

I want to extend the application of spin-polarized scanning tunneling microscopy (SP-STM) to address nano-spintronic systems comprised of technologically relevant materials like rare-earth elements as well as address the spin dynamics of systems consisting of single and coupled atoms on surfaces. Considering SP-STM has been historically utilized to address static magnetic properties, especially with atomic-scale systems, it will be a primary focus within this project to address spin dynamics at the atomic scale. As an emphasis, phenomena like spin-transfer torque at the atomic level and its influence on the dynamical properties of systems will be a focus. Furthermore, we will address the precessional dynamics of individual spins coupled to itinerant electron baths. A second theme of this project will be combining single atom magnetometry techniques with the bottom-up fabrication capabilities of the STM to realize model magnetic systems. To this end, there will be an emphasis on utilizing non-magnetic substrates which exhibit indirect exchange interactions. As these methods have previously focused on 3d transition metals, the expansion of these techniques to address more relevant materials like f-electron systems, which play a prominent role in hard-magnet technology, will be emphasized.

我想要扩展自旋极化扫描隧道显微镜(SP-STM)的应用，以研究由稀土元素等技术相关材料组成的纳米自旋电子系统，以及研究由表面单原子和耦合原子组成的系统的自旋动力学。考虑到SP-STM历史上一直被用来研究静态磁性，特别是对于原子尺度的系统，它将是本项目的主要重点，以解决原子尺度的自旋动力学。作为重点，原子水平上的自旋转移扭矩等现象及其对系统动力学性质的影响将是一个焦点。此外，我们将讨论与巡回电子浴耦合的单个自旋的进动动力学。该项目的第二个主题将是将单原子磁测量技术与扫描隧道显微镜自下而上的制造能力相结合，以实现模型磁系统。为此，重点将是利用表现出间接交换作用的非磁性衬底。由于这些方法以前侧重于3D过渡金属，因此将强调扩展这些技术以处理更相关的材料，如在硬磁技术中发挥突出作用的f电子系统。