Ultrafast Magnetization Dynamics Investigated with Femtosecond Time-Resolved X-Ray Magnetic Circular Dichroism

Abstract

AbstractX-ray magnetic circular dichroism is well known to provide quantitative and element-specific information on the magnetic moment in magnetically ordered materials. In recent years magnetic order in optically excited states and the respective ultrafast relaxation dynamics became a topic of considerable interest. On pico- and femtosecond timescales such dynamics is analyzed by pump-probe experiments which are nowadays carried out employing table-top femtosecond laser setups and large scale facilities like synchrotron light sources or free electron lasers. Here, we motivate the problem of ultrafast, laser-induced magnetization dynamics and review results of near-infrared laser pump and x-ray magnetic circular dichroism probe experiments.KeywordsFree Electron LaserElectron BunchMagnetization DynamicMetallic FerromagnetOrbital Magnetic MomentThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.