Spin- and time-resolved momentum microscopy for the study of ultrafast magnetization dynamics

用于研究超快磁化动力学的自旋和时间分辨动量显微镜

• 批准号: 468613984
• 负责人: Professor Dr. Stefan Mathias
• 金额: --
• 依托单位: I. Physikalisches Institut - Festkörper- und Tieftemperaturphysik -
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/468613984?language=en
• 关键词: Spin; time; resolved; momentum; microscopy

In our project, we will study the spin-resolved transient band-structure and population dynamics during laser-induced demagnetization processes. An understanding of ultrafast magnetic processes from a band-structure point of view is indispensable to solve some of the current key-problems in ultrafast magnetism, in particular with respect to seemingly contradictory experimental results. Important fundamental questions that will be addressed are the description of finite temperature itinerant electron ferromagnetism, and in particular the description in non-equilibrium during and after an ultrafast optical excitation. In order to carry out the project, we will use a novel time- and spin-resolved photoemission experiment (spin-resolved momentum microscopy), and we apply for funding for a PhD student and the necessary equipment to prepare the needed ferromagnetic thin film sample systems.

在我们的项目中，我们将研究激光诱导退磁过程中自旋分辨的瞬态能带结构和粒子数动力学。从能带结构的角度理解超快磁过程对于解决超快磁性中当前的一些关键问题是必不可少的，特别是对于看似矛盾的实验结果。将解决的重要的基本问题是有限温度巡回电子铁磁性的描述，特别是在非平衡过程中和超快光激发后的描述。为了实施该项目，我们将使用一种新的时间和自旋分辨光电发射实验（自旋分辨动量显微镜），我们申请资助一名博士生和必要的设备来制备所需的铁磁薄膜样品系统。