Bridging the time scales between ultrafast and precessional magnetization dynamics (A07)

连接超快磁化动力学和进动磁化动力学之间的时间尺度 (A07)

• 批准号: 397771792
• 金额: --
• 依托单位: Institut für Experimentalphysik
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/397771792?language=en
• 关键词: Bridging; time; scales; between; ultrafast

We explore the spin dynamics after ultrashort infrared-laser excitation of magnetic thin-film structures with a focus on systems containing antiferromagnetic materials. The goal is to gain insight into the interplay of ultrafast demagnetization, spin currents and thermal effects. In work package 1, time-resolved magnetic circular and linear dichroisms in resonant X-ray reflectivity will reveal transient changes in the spin structures of bilayers consisting of antiferromagnetic and ferromagnetic materials. Lateral resolution provided by X-ray photoelectron emission microscopy is used in work package 2 to study the lateral propagation of excitations and the interaction with magnetic domain walls.

我们探讨了磁薄膜结构的超短红外激光激发后的自旋动力学，重点是含有反铁磁材料的系统。我们的目标是深入了解超快退磁，自旋电流和热效应的相互作用。在工作包1中，时间分辨的磁性圆和线性二色性共振X射线反射率将揭示由反铁磁和铁磁材料组成的双层的自旋结构的瞬态变化。由X射线光电子发射显微镜提供的横向分辨率用于工作包2中，以研究激发的横向传播和与磁畴壁的相互作用。