Local interactions of hot electron-spins with nanomagnets studied by spin-polarized scanning field emission microscopy and spectroscopy

该项目旨在原子尺度上对热电子自旋与磁体的相互作用进行实验研究。以磁性纳米结构表面上方的未占据电子共振态作为模型系统，重点研究了局域现象。借助于自旋极化的扫描场发射显微镜和能谱，自旋极化的电子被注入到这些态中，导致在表面前方形成二维的热电子气。了解其与磁性表面缺陷(如台阶边和纳米岛)或与横向变化的表面磁化结构的局部相互作用是该项目的重点。

The project aims at the experimental study of the interactions of hot-electron spins with magnets on the atomic scale. Unoccupied electronic resonance states above the surface of magnetic nanostructures are used as model systems, focusing on the investigation of local phenomena. By means of spin-polarized scanning field emission microscopy and spectroscopy spin-polarized electrons are injected into these states, resulting in a two-dimensional hot-electron gas in front of the surface. Understanding its local interaction with magnetic surface defects, like step edges and nano-islands, or with laterally varying surface magnetization structures is in the focus of this project.